Sweet, J. R. (1978). A review of Geocorinae of the United States east of the 100th parallel (Hemiptera: Lygaeidae). Sweet.
Chicago Style (17th ed.) CitationSweet, Janice Readio. A Review of Geocorinae of the United States East of the 100th Parallel (Hemiptera: Lygaeidae). [College Station, Tex.]: Sweet, 1978.
MLA (9th ed.) CitationSweet, Janice Readio. A Review of Geocorinae of the United States East of the 100th Parallel (Hemiptera: Lygaeidae). Sweet, 1978.
Warning: These citations may not always be 100% accurate.