Παραπομπή APA

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

Παραπομπή Chicago Style

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

Παραπομπή MLA

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