APA (7th ed.) Citation

Rexroad, C. B., & Nicoll, R. S. (1965). Conodonts from the Menard formation (Chester series) of the Illinois Basin. [publisher not identified].

Chicago Style (17th ed.) Citation

Rexroad, Carl Buckner, and Robert S. Nicoll. Conodonts from the Menard Formation (Chester Series) of the Illinois Basin. Bloomington: [publisher not identified], 1965.

MLA (9th ed.) Citation

Rexroad, Carl Buckner, and Robert S. Nicoll. Conodonts from the Menard Formation (Chester Series) of the Illinois Basin. [publisher not identified], 1965.