Παραπομπή APA

Tack, A. (1974). How to overcome nervous tension and speak well in public. World's book.

Παραπομπή Chicago Style

Tack, Albert. How to Overcome Nervous Tension and Speak Well in Public. Trowbridge: World's book, 1974.

Παραπομπή MLA

Tack, Albert. How to Overcome Nervous Tension and Speak Well in Public. World's book, 1974.