Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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