Gaya APA

Winger, B, J., Seo, K. (1979). Managerial economics : text, problems, and short cases. (1979). : Homewood : Richard D. Irwin.,.

Gaya MLA

Winger, Bernard, J.., Seo, K.K.. "Managerial economics : text, problems, and short cases.". 1979 : Homewood : Richard D. Irwin.,, 1979. Text.