Abdul – Hameed, T. A. (2015). An Appraisal of GSM Telecommunications Services Delivery in Lagos and Oyo States of Nigeria.
Lua i Stíl Chicago (17ú heag.)Abdul – Hameed, Taofeek Adekunle. An Appraisal of GSM Telecommunications Services Delivery in Lagos and Oyo States of Nigeria. 2015.
Lua MLA (9ú heag.)Abdul – Hameed, Taofeek Adekunle. An Appraisal of GSM Telecommunications Services Delivery in Lagos and Oyo States of Nigeria. 2015.
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