Citazione Stile APA (7a Edizione)

Penn, B. (2004). Be your own PR expert (2nd ed.). Thomson Learning.

Citazione stile Chigago Style (17a edizione)

Penn, Bill. Be Your Own PR Expert. 2nd ed. Australia: Thomson Learning, 2004.

Citatione MLA (9a ed.)

Penn, Bill. Be Your Own PR Expert. 2nd ed. Thomson Learning, 2004.