Ahmed, A., & Haq, M. M. (2017). Standard operating procedure: Sales & marketing The Westin Dhaka. BRAC Univeristy.
Lua i Stíl Chicago (17ú heag.)Ahmed, Arafat, agus Mr. Mahmudul Haq. Standard Operating Procedure: Sales & Marketing The Westin Dhaka. BRAC Univeristy, 2017.
Lua MLA (8ú heag.)Ahmed, Arafat, agus Mr. Mahmudul Haq. Standard Operating Procedure: Sales & Marketing The Westin Dhaka. BRAC Univeristy, 2017.
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