Style de citation APA

Sundharam, K. P. M. V. (1978). Principles of economics (13.).

Style de citation Chicago

Sundharam, K P M; Vaish. Principles of Economics. 13. Vikas Publishing House Pvt. Ltd., New Delhi, 1978.

Style de citation MLA

Sundharam, K P M; Vaish. Principles of Economics. 13. 1978.