APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

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

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