APA استشهاد

Lesikar, R. V. (1976). Business Communication: Theory and Practice (3rd ed.). Richard. D. Irwin.

استشهاد بنمط شيكاغو

Lesikar, Raymond V. Business Communication: Theory and Practice. 3rd ed. Illinois: Richard. D. Irwin, 1976.

MLA استشهاد

Lesikar, Raymond V. Business Communication: Theory and Practice. 3rd ed. Richard. D. Irwin, 1976.