| The financial impact of boycotts and threats of boycott PS Koku, A Akhigbe, TM Springer Journal of Business Research 40 (1), 15-20, 1997 | 160 | 1997 |
| Financial exclusion of the poor: a literature review PS Koku International Journal of Bank Marketing 33 (5), 654-668, 2015 | 125 | 2015 |
| Corporate name change signaling in the services industry P Sergius Koku Journal of Services Marketing 11 (6), 392-408, 1997 | 99 | 1997 |
| The effect of new product announcements and preannouncements on stock price PS Koku, HS Jagpal, PV Viswanath Journal of Market-Focused Management 2, 183-199, 1997 | 97 | 1997 |
| What is in a name? The impact of strategic name change on student enrollment in colleges and universities PS Koku Journal of marketing for higher education 8 (2), 53-71, 1997 | 61 | 1997 |
| On the effectiveness of consumer boycotts organized through the internet: the market model P Sergius Koku Journal of Services Marketing 26 (1), 20-26, 2012 | 56 | 2012 |
| The relationship between exchange rate and inflation: The case of Western Balkans countries B Fetai, PS Koku, A Caushi, A Fetai Journal of Business Economics and Finance 5 (4), 360-364, 2016 | 52 | 2016 |
| The effects of news on initial corporate lawsuits PS Koku, AA Qureshi, A Akhigbe Journal of Business Research 53 (1), 49-55, 2001 | 45 | 2001 |
| Where do we go from here? Towards a theory in Islamic marketing P Sergius Koku, O Jusoh Journal of Islamic Marketing 5 (3), 366-378, 2014 | 41 | 2014 |
| Overconfidence and the performance of business students on examinations PS Koku, AA Qureshi Journal of Education for Business 79 (4), 217-224, 2004 | 41 | 2004 |
| On corporate social responsibility and Islamic marketing P Sergius Koku, S Savas Journal of Islamic Marketing 5 (1), 33-48, 2014 | 37 | 2014 |
| Is there a difference in tipping in restaurant versus non‐restaurant service encounters, and do ethnicity and gender matter? P Sergius Koku Journal of Services Marketing 19 (7), 445-452, 2005 | 37 | 2005 |
| Price signaling: does it ever work? P Sergius Koku Journal of Consumer Marketing 12 (1), 45-49, 1995 | 36 | 1995 |
| Natural market segments: religion and identity–the case of “zongos” in Ghana P Sergius Koku Journal of Islamic Marketing 2 (2), 177-185, 2011 | 32 | 2011 |
| An analysis and the effects of class-action lawsuits PS Koku Journal of Business Research 59 (4), 508-515, 2006 | 27 | 2006 |
| On boycotts organized through the internet PS Koku Journal of Marketing Development and Competitiveness 5 (6), 83-93, 2011 | 26 | 2011 |
| Restaurant tipping and customers’ susceptibility to emotional contagion PS Koku, S Savas Journal of Services Marketing 30 (7), 762-772, 2016 | 25 | 2016 |
| Doing well by doing good–marketing strategy to help the poor: The case of commercial banks in Ghana PS Koku Journal of Financial Services Marketing 14, 135-151, 2009 | 24 | 2009 |
| Do payday loans help the working poor? PS Koku, S Jagpal International Journal of Bank Marketing 33 (5), 592-604, 2015 | 22 | 2015 |
| On bizarreness in the entertainment industry P Sergius Koku Journal of Services Marketing 9 (4), 19-30, 1995 | 22 | 1995 |
