APA (7th ed.) Citation

Houseal, T. W. (1980). Geographic variation in the yellow mud turtle, Kinosternon flavescens, from the central and southwestern United States, and northwestern Mexico. [publisher not identified].

Chicago Style (17th ed.) Citation

Houseal, Timothy William. Geographic Variation in the Yellow Mud Turtle, Kinosternon Flavescens, from the Central and Southwestern United States, and Northwestern Mexico. [Place of publication not identified]: [publisher not identified], 1980.

MLA (9th ed.) Citation

Houseal, Timothy William. Geographic Variation in the Yellow Mud Turtle, Kinosternon Flavescens, from the Central and Southwestern United States, and Northwestern Mexico. [publisher not identified], 1980.