Cita APA (7a ed.)

Riggs, J. L. (2004). Engineering Economics (7th ed.). Tata McGraw-Hill Publishing Company Ltd.

Cita Chicago Style (17a ed.)

Riggs, James L. Engineering Economics. 7th ed. New Delhi: Tata McGraw-Hill Publishing Company Ltd, 2004.

Cita MLA (9a ed.)

Riggs, James L. Engineering Economics. 7th ed. Tata McGraw-Hill Publishing Company Ltd, 2004.