APA (7th ed.) Citation

Hartnack, H. (1939). 202 common household pests of North America. Hartnack.

Chicago Style (17th ed.) Citation

Hartnack, Hugo. 202 Common Household Pests of North America. Chicago, Ill: Hartnack, 1939.

MLA (9th ed.) Citation

Hartnack, Hugo. 202 Common Household Pests of North America. Hartnack, 1939.

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