Gaya APA

Keat, P, G., Young, P, K, Y. (2009). Managerial economics : economic tools for today's decision makers (6th.ed.). Upper Saddle River, New Jersey: Pearson Education.

Gaya MLA

Keat, Paul, G.., Young, Philip, K., Y.. "Managerial economics : economic tools for today's decision makers". 6th.ed. Upper Saddle River, New Jersey: Pearson Education, 2009. Teks.