Dyfyniad APA

Sullivan, W. G., Wicks, E. M., & Koelling, C. P. (2009). Engineering economy (14th ed.). Pearson Education.

Dyfyniad Arddull Chicago

Sullivan, William G., Elin M. Wicks, and C. Patrick Koelling. Engineering Economy. 14th ed. Upper Saddle River, N.J: Pearson Education, 2009.

Dyfyniad MLA

Sullivan, William G., et al. Engineering Economy. 14th ed. Pearson Education, 2009.

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