APA (7th ed.) Citation

Stumm, E. C. (1953). Lower Middle Devonian proetid trilobites from Michigan, southwestern Ontario, and northern Ohio. University of Michigan Press.

Chicago Style (17th ed.) Citation

Stumm, Erwin Charles. Lower Middle Devonian Proetid Trilobites from Michigan, Southwestern Ontario, and Northern Ohio. Ann Arbor: University of Michigan Press, 1953.

MLA (9th ed.) Citation

Stumm, Erwin Charles. Lower Middle Devonian Proetid Trilobites from Michigan, Southwestern Ontario, and Northern Ohio. University of Michigan Press, 1953.