APA-referens

Tull, D. S. (2000). Marketting Research/6e (6th ed.). New delhi.

Chicago-stil citat

Tull, Donald S. Marketting Research/6e. 6th ed. Prentice - Hall: New delhi, 2000.

MLA-referens

Tull, Donald S. Marketting Research/6e. 6th ed. New delhi, 2000.