Abdul – Hameed, T. A. (2015). An Appraisal of GSM Telecommunications Services Delivery in Lagos and Oyo States of Nigeria.
Chicago-referens (17:e uppl.)Abdul – Hameed, Taofeek Adekunle. An Appraisal of GSM Telecommunications Services Delivery in Lagos and Oyo States of Nigeria. 2015.
MLA-referens (9:e uppl.)Abdul – Hameed, Taofeek Adekunle. An Appraisal of GSM Telecommunications Services Delivery in Lagos and Oyo States of Nigeria. 2015.
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