Gaya APA

Buzzell, R, D., Gale, B, T. (1987). The PIMS (Profit, Impact of Market Strategy) Principles (I). New York: The Free Press.

Gaya MLA

Buzzell, Robert, D.., Gale, Bradley, T.. "The PIMS (Profit, Impact of Market Strategy) Principles". I New York: The Free Press, 1987. Text.