APA (7th ed.) Citation

Enyert, R. L. (1949). Middle Devonian sandstones of the Michigan basin. [publisher not identified].

Chicago Style (17th ed.) Citation

Enyert, Richard Lyle. Middle Devonian Sandstones of the Michigan Basin. [Place of publication not identified]: [publisher not identified], 1949.

MLA (9th ed.) Citation

Enyert, Richard Lyle. Middle Devonian Sandstones of the Michigan Basin. [publisher not identified], 1949.