Παραπομπή APA

Zimbardo, P. G. (1977). Shyness: What it is, What it do About it. Addison Wesley.

Παραπομπή Chicago Style

Zimbardo, Philip G. Shyness: What It Is, What It Do About It. Reading: Addison Wesley, 1977.

Παραπομπή MLA

Zimbardo, Philip G. Shyness: What It Is, What It Do About It. Addison Wesley, 1977.