APA-referens (7:e uppl.)

Nangle, D. W., & Erdley, C. A. 1. (2001). The role of friendship in psychological adjustment. ossey-Bass.

Chicago-referens (17:e uppl.)

Nangle, Douglas W., och Cynthia Anne 1964 Erdley. The Role of Friendship in Psychological Adjustment. San Francisco, Calif.: ossey-Bass, 2001.

MLA-referens (8:e uppl.)

Nangle, Douglas W., och Cynthia Anne 1964 Erdley. The Role of Friendship in Psychological Adjustment. ossey-Bass, 2001.