Παραπομπή APA

Hasan,Zubair. (1975). Theory of profit. Vikas Publishing House Pvt. Ltd.

Παραπομπή Chicago Style

Hasan,Zubair. Theory of Profit. Delhi: Vikas Publishing House Pvt. Ltd, 1975.

Παραπομπή MLA

Hasan,Zubair. Theory of Profit. Vikas Publishing House Pvt. Ltd, 1975.