APA (7th ed.) Citation

Harpster, H. T. (1947). The insect world. Viking Press.

Chicago Style (17th ed.) Citation

Harpster, Hilda Thankful. The Insect World. New York: Viking Press, 1947.

MLA (9th ed.) Citation

Harpster, Hilda Thankful. The Insect World. Viking Press, 1947.

Warning: These citations may not always be 100% accurate.