Παραπομπή APA
Powell, A. B., & Fritzsche, B. A. (1997). The self-directed search (SDS): Professional User's Guide (1994 edition.). Odessa, Fla.: Psychological Assessment Resources.
Παραπομπή Chicago StylePowell, Amy Beth., and Barbara A. Fritzsche. The Self-directed Search (SDS): Professional User's Guide. 1994 edition. Odessa, Fla.: Psychological Assessment Resources, 1997.
Παραπομπή MLAPowell, Amy Beth., and Barbara A. Fritzsche. The Self-directed Search (SDS): Professional User's Guide. 1994 edition. Odessa, Fla.: Psychological Assessment Resources, 1997.
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