APA (7th ed.) Zitazioa

Webster’s – Marriam. (1998). Concise Handbook for Writer`s (6th ed.). Mc Graw Hill.

Chicago Style (17th ed.) Zitazioa

Webster’s – Marriam. Concise Handbook for Writer`s. 6th ed. America: Mc Graw Hill, 1998.

MLA (9th ed.) Zitazioa

Webster’s – Marriam. Concise Handbook for Writer`s. 6th ed. Mc Graw Hill, 1998.