APA (7e ed.) Bronvermelding

Sullivan, W. G., Wicks, E. M., & Koelling, C. P. 1. (2012). Engineering economy (15th ed.). Pearson.

Chicago (17e ed.) Bronvermelding

Sullivan, William G., Elin M. Wicks, en C. Patrick 1953 Koelling. Engineering Economy. 15th ed. Upper Saddle River, N.J: Pearson, 2012.

MLA (9e ed.) Bronvermelding

Sullivan, William G., et al. Engineering Economy. 15th ed. Pearson, 2012.