APA (7th ed.) Citation

Thomas, M. W. (1966). Citizens of the world (1. publ., 4. impression.). Nelson.

Chicago Style (17th ed.) Citation

Thomas, M. W. Citizens of the World. 1. publ., 4. impression. London [u.a.]: Nelson, 1966.

MLA (9th ed.) Citation

Thomas, M. W. Citizens of the World. 1. publ., 4. impression. Nelson, 1966.