APA (7th ed.) Citation

Stumm, E. C. (1956). A revision of A. W. Grabau's species of Mucrospirifer from the Middle Devonian traverse group of Michigan. Museum of Paleontology, University of Michigan.

Chicago Style (17th ed.) Citation

Stumm, Erwin Charles. A Revision of A. W. Grabau's Species of Mucrospirifer from the Middle Devonian Traverse Group of Michigan. Ann Arbor: Museum of Paleontology, University of Michigan, 1956.

MLA (9th ed.) Citation

Stumm, Erwin Charles. A Revision of A. W. Grabau's Species of Mucrospirifer from the Middle Devonian Traverse Group of Michigan. Museum of Paleontology, University of Michigan, 1956.