APA (7th ed.) Citation

Gardiner, A. G. (1971). Portraits and portents. Books for Libraries Press.

Chicago Style (17th ed.) Citation

Gardiner, A. G. Portraits and Portents. Freeport, N.Y.: Books for Libraries Press, 1971.

MLA (9th ed.) Citation

Gardiner, A. G. Portraits and Portents. Books for Libraries Press, 1971.