Evans, H. E. Observations on Aggregations of Males of Two Species of Beewolves (Hymenoptera: Sphecidae: Philanthus). Wiley.
Chicago Style (17th ed.) CitationEvans, Howard E. Observations on Aggregations of Males of Two Species of Beewolves (Hymenoptera: Sphecidae: Philanthus). Wiley.
MLA (9th ed.) CitationEvans, Howard E. Observations on Aggregations of Males of Two Species of Beewolves (Hymenoptera: Sphecidae: Philanthus). Wiley.
Warning: These citations may not always be 100% accurate.