APA (7th ed.) Zitazioa

Roberts-Phelps, G. (2004). The concise guide to telephone tactics. Thorogood.

Chicago Style (17th ed.) Zitazioa

Roberts-Phelps, Graham. The Concise Guide to Telephone Tactics. London: Thorogood, 2004.

MLA (9th ed.) Zitazioa

Roberts-Phelps, Graham. The Concise Guide to Telephone Tactics. Thorogood, 2004.