APA-viite (7. p.)

SHELTOR, N., & BURTON, S. (1994). Assertiveness skills. Businnes One Irwin.

Chicago-viite (17. p.)

SHELTOR, Nelda, ja Sharon BURTON. Assertiveness Skills. Burr Ridge: Businnes One Irwin, 1994.

MLA-viite (9. p.)

SHELTOR, Nelda, ja Sharon BURTON. Assertiveness Skills. Businnes One Irwin, 1994.