Cita APA (7a ed.)

Harpster, H. T., & Gay, Z. (1948). The insect world (2nd printing.). Viking.

Cita Chicago Style (17a ed.)

Harpster, Hilda Thankful, y Zhenya Gay. The Insect World. 2nd printing. New York: Viking, 1948.

Cita MLA (9a ed.)

Harpster, Hilda Thankful, y Zhenya Gay. The Insect World. 2nd printing. Viking, 1948.