APA (7th ed.) Zitazioa

Alexander, L. G. (1967). Developing skills: An integrated course for intermediate students (1a. ed.). Longmans, Green and Co.

Chicago Style (17th ed.) Zitazioa

Alexander, Louis George. Developing Skills: An Integrated Course for Intermediate Students. 1a. ed. Londres: Longmans, Green and Co, 1967.

MLA (9th ed.) Zitazioa

Alexander, Louis George. Developing Skills: An Integrated Course for Intermediate Students. 1a. ed. Longmans, Green and Co, 1967.