APA (7th ed.) Zitazioa

Abbott, G. (1969). Conditionals. Longman Group.

Chicago Style (17th ed.) Zitazioa

Abbott, G.W. Conditionals. London: Longman Group, 1969.

MLA (9th ed.) Zitazioa

Abbott, G.W. Conditionals. Longman Group, 1969.