APA (7th ed.) Citation

Caldwell, J. R., & Hall, R. L. (1964). Hopewellian studies. [publisher not identified].

Chicago Style (17th ed.) Citation

Caldwell, Joseph R., and Robert L. Hall. Hopewellian Studies. Springfield: [publisher not identified], 1964.

MLA (9th ed.) Citation

Caldwell, Joseph R., and Robert L. Hall. Hopewellian Studies. [publisher not identified], 1964.