APA
Ries A., Troute J., . (1986). Positioning. New York: McGraw Hill Book Co.
Chicago
Ries Al, Troute Jack, . 1986. Positioning. New York: McGraw Hill Book Co.
Harvard
Ries A., Troute J., . (1986). Positioning. New York: McGraw Hill Book Co.
MLA
Ries Al, Troute Jack, . Positioning. New York: McGraw Hill Book Co. 1986.