Haider, S. J. (1989). Acquisition of Scientific Literature in Developing Countries. 3: Pakistan.
Citazione stile Chigago Style (17a edizione)Haider, Syed Jalaluddin. Acquisition of Scientific Literature in Developing Countries. 3: Pakistan. 1989.
Citatione MLA (9a ed.)Haider, Syed Jalaluddin. Acquisition of Scientific Literature in Developing Countries. 3: Pakistan. 1989.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.