APA (7th ed.) Citation

Abbott, G. W. (1969). Conditionals (1a. ed.). Longmans, Green and Co.

Chicago Style (17th ed.) Citation

Abbott, G. W. Conditionals. 1a. ed. Londres: Longmans, Green and Co, 1969.

MLA (9th ed.) Citation

Abbott, G. W. Conditionals. 1a. ed. Longmans, Green and Co, 1969.