APA استشهاد

Kewal, K. D., & Varma, J. (1948). Elementary economic theory (21.). S Chand & Co (Pvt) Ltd.

استشهاد بنمط شيكاغو

Kewal, Krishan Dewett, و J.D Varma. Elementary Economic Theory. 21. New Delhi: S Chand & Co (Pvt) Ltd, 1948.

MLA استشهاد

Kewal, Krishan Dewett, و J.D Varma. Elementary Economic Theory. 21. S Chand & Co (Pvt) Ltd, 1948.