Hartnack, H. (1939). 202 common household pests of North America. Hartnack.
Chicago Style (17th ed.) CitationHartnack, Hugo. 202 Common Household Pests of North America. Chicago, Ill: Hartnack, 1939.
MLA (9th ed.) CitationHartnack, Hugo. 202 Common Household Pests of North America. Hartnack, 1939.
Warning: These citations may not always be 100% accurate.