APA استشهاد

Goldstein, A. (1992). Secrets of overcoming sales resistance (7.).

استشهاد بنمط شيكاغو

Goldstein, Albert. Secrets of Overcoming Sales Resistance. 7. :, 1992.

MLA استشهاد

Goldstein, Albert. Secrets of Overcoming Sales Resistance. 7. 1992.