APA (7th ed.) Citation

Bird, B. M., Gandrud, B. W., & Kozlinsky, N. L. (1930). Washability studies of Clark seam at Marvel, Ala. [publisher not identified].

Chicago Style (17th ed.) Citation

Bird, Byron Matthew, Bennie William Gandrud, and N. L. Kozlinsky. Washability Studies of Clark Seam at Marvel, Ala. Washington, D.C.: [publisher not identified], 1930.

MLA (9th ed.) Citation

Bird, Byron Matthew, et al. Washability Studies of Clark Seam at Marvel, Ala. [publisher not identified], 1930.