Tohutoro APA (7th ed.)
Riggs, J. L., & Bedworth, D. D. (2011). Engineering economics (4th ed.). Tata McGraw-Hill.
Tohutoru Kātū Chicago (17th ed.)
Riggs, James L., me David D/Randhawa Bedworth. Engineering Economics. 4th ed. New Delhi: Tata McGraw-Hill, 2011.
Tohutoro MLA (9th ed.)
Riggs, James L., me David D/Randhawa Bedworth. Engineering Economics. 4th ed. Tata McGraw-Hill, 2011.
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