APA استشهاد

Seth,M.L. (1999). Principles of economics (33rd rev. ed.). Lakshmi Narain Agarwal.

استشهاد بنمط شيكاغو

Seth,M.L. Principles of Economics. 33rd rev. ed. Agra: Lakshmi Narain Agarwal, 1999.

MLA استشهاد

Seth,M.L. Principles of Economics. 33rd rev. ed. Lakshmi Narain Agarwal, 1999.