Essig, E. O. (1917). Aphididae of California: New species of Aphididae and notes from various parts of the state, but chiefly from the campus of the University of California, Berkeley, California. University of California press.
Chicago Style (17th ed.) CitationEssig, E. O. Aphididae of California: New Species of Aphididae and Notes from Various Parts of the State, but Chiefly from the Campus of the University of California, Berkeley, California. Berkeley: University of California press, 1917.
MLA (9th ed.) CitationEssig, E. O. Aphididae of California: New Species of Aphididae and Notes from Various Parts of the State, but Chiefly from the Campus of the University of California, Berkeley, California. University of California press, 1917.
Warning: These citations may not always be 100% accurate.