APA-viite (7. p.)

Roberto, E. L. (1986). Consumer coping behavior in difficult times: Year III. s.n.].

Chicago-viite (17. p.)

Roberto, Eduardo L. Consumer Coping Behavior in Difficult Times: Year III. [s.l: s.n.], 1986.

MLA-viite (9. p.)

Roberto, Eduardo L. Consumer Coping Behavior in Difficult Times: Year III. s.n.], 1986.