APA

Ries A., Trout J., . (1994). The 22 immutable laws of marketing: violate them at your own risk. New York: Harper.

Chicago

Ries Al, Trout Jack, . 1994. The 22 immutable laws of marketing: violate them at your own risk. New York: Harper.

Harvard

Ries A., Trout J., . (1994). The 22 immutable laws of marketing: violate them at your own risk. New York: Harper.

MLA

Ries Al, Trout Jack, . The 22 immutable laws of marketing: violate them at your own risk. New York: Harper. 1994.