APA (7th ed.) Zitazioa

Taylor Shirley & Gartside L. (2004). Model business letters, emails and other business documents (6th ed.). Prentice Hall.

Chicago Style (17th ed.) Zitazioa

Taylor Shirley eta Gartside L. Model Business Letters, Emails and Other Business Documents. 6th ed. London: Prentice Hall, 2004.

MLA (9th ed.) Zitazioa

Taylor Shirley eta Gartside L. Model Business Letters, Emails and Other Business Documents. 6th ed. Prentice Hall, 2004.