Gaya APA

Petersen, H, C., Lewis, W. (1993). Managerial Economics 3th Ed (3th Ed). Mac Millan Publishing Company: Prentice Hall.

Gaya MLA

Petersen, H., Craig., Lewis, W.Cris. "Managerial Economics 3th Ed". 3th Ed Mac Millan Publishing Company: Prentice Hall, 1993. Text.