APA (7th ed.) Citation

Becke, L. (1970). Under tropic skies. Books for Libraries Press.

Chicago Style (17th ed.) Citation

Becke, Louis. Under Tropic Skies. Freeport, N.Y.: Books for Libraries Press, 1970.

MLA (8th ed.) Citation

Becke, Louis. Under Tropic Skies. Books for Libraries Press, 1970.