APA (7th ed.) Citation

Schmidt, K. P. (1945). A new turtle from the Paleocene of Colorado. [publisher not identified].

Chicago Style (17th ed.) Citation

Schmidt, Karl Patterson. A New Turtle from the Paleocene of Colorado. [Chicago]: [publisher not identified], 1945.

MLA (9th ed.) Citation

Schmidt, Karl Patterson. A New Turtle from the Paleocene of Colorado. [publisher not identified], 1945.