APA استشهاد

Seth, M., & Vaish, M. (1971). Principles of economics/6e (5th ed.). Lakshmi narain agarwal.

استشهاد بنمط شيكاغو

Seth, M.L, و M.C Vaish. Principles of Economics/6e. 5th ed. Agra: Lakshmi narain agarwal, 1971.

MLA استشهاد

Seth, M.L, و M.C Vaish. Principles of Economics/6e. 5th ed. Lakshmi narain agarwal, 1971.