Gaya APA

Holloway, R, J., Hancock, R, S. (1973). Marketing in a changing environment ed. 2 (2). Massachusetts: John Wiley & Sons; Inc.

Gaya MLA

Holloway, Robert, J., Hancock, Robert, S. "Marketing in a changing environment ed. 2". 2 Massachusetts: John Wiley & Sons; Inc, 1973. Text.