Cita APA (7a ed.)

Richards, L. G. (1960). Ice age coming?: The story of glaciers, bergs, and ice caps. John Day.

Cita Chicago Style (17a ed.)

Richards, Leverett G. Ice Age Coming?: The Story of Glaciers, Bergs, and Ice Caps. New York: John Day, 1960.

Cita MLA (9a ed.)

Richards, Leverett G. Ice Age Coming?: The Story of Glaciers, Bergs, and Ice Caps. John Day, 1960.