Cita APA (7th ed.)
Sullivan,William G, & Elin M.Wicks,C.Patrick Koelling. (2009). Engineering economy (14th ed.). Pearson Education of India.
Cita Chicago (17th ed.)
Sullivan,William G, i Elin M.Wicks,C.Patrick Koelling. Engineering Economy. 14th ed. New Delhi: Pearson Education of India, 2009.
Cita MLA (9th ed.)
Sullivan,William G, i Elin M.Wicks,C.Patrick Koelling. Engineering Economy. 14th ed. Pearson Education of India, 2009.
Atenció: Aquestes cites poden no estar 100% correctes.