Citazione APA

Dwivedi, D. N. (2005). Principles of economics (2nd rev.ed.). Vikas Publishing House.

Stile di citazione Chicago

Dwivedi, D N. Principles of Economics. 2nd rev.ed. Noida: Vikas Publishing House, 2005.

Citazione MLA

Dwivedi, D N. Principles of Economics. 2nd rev.ed. Vikas Publishing House, 2005.