APA (7th ed.) Citation

Mai, W. F. (1975). Pictorial key to genera of plant-parasitic nematodes (4th ed., rev.). Comstock Pub. Associates.

Chicago Style (17th ed.) Citation

Mai, W. F. Pictorial Key to Genera of Plant-parasitic Nematodes. 4th ed., rev. Ithaca, N.Y: Comstock Pub. Associates, 1975.

MLA (9th ed.) Citation

Mai, W. F. Pictorial Key to Genera of Plant-parasitic Nematodes. 4th ed., rev. Comstock Pub. Associates, 1975.