Pakistan. Directorate of Films & Publications. (1981). Pakistan: Energy resources. Ministry of Information & Broadcasting. Directorate of Films & Publications. Govt. of Pakistan.
Chicago-referens (17:e uppl.)Pakistan. Directorate of Films & Publications. Pakistan: Energy Resources. Islamabad: Ministry of Information & Broadcasting. Directorate of Films & Publications. Govt. of Pakistan, 1981.
MLA-referens (8:e uppl.)Pakistan. Directorate of Films & Publications. Pakistan: Energy Resources. Ministry of Information & Broadcasting. Directorate of Films & Publications. Govt. of Pakistan, 1981.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.