Usman, Umar and Mohd Mokhtar, Sany Sanuri (2017) Image, Perceived Quality, Perceived Value and Student Loyalty in the Higher Education Institutions. In: : 4th Conference on Business Management, 29 - 30 Oktober 2017, The Gurney Resprt Hotel & Recidences Penang, Malaysia...

Usman, Umar and Usman, Fatimah Inuwa (2017) Impact of Quality of Work Life and Turnover Intention in Selected Nigerian Banks. In: 4th Conference on Business Managemen, 29 - 30 Oktober 2017, The Gurney Resprt Hotel & Recidences Penang, Malaysia..

Usman, Umar and Mohd Mokhtar, Sany Sanuri (2016) Analysis of service quality, university image and student satisfaction on student loyalty in higher education in Nigeria. International Business Management, 10 (12). pp. 2490-2502. ISSN 1993-5250 (In Press)

Esq, Maryam Sani Sambo and Usman, Umar (2014) Assessment of indigenous capacity in telecommunications technology in Nigeria. In: UUM International Conference on Governance 2014 (ICG), 29th - 30th November 2014, Flamingo Hotel By The Beach, Pulau Pinang.

Usman, Umar and Jibril, Abdulsalam (2014) Empirical evidence of e-banking and customer perception on banks service quality in Nigeria. In: UUM International Conference on Governance 2014 (ICG), 29th - 30th November 2014, Flamingo Hotel By The Beach, Pulau Pinang.

Usman, Umar (2013) Total service quality management and the service industry: Evidence from international airlines. In: Conference on Business Management Research 2013, December 11, 2013, EDC, Universiti Utara Malaysia, Sintok.