APA (7th ed.) Citation

Roundtree, H., Potter, S., & Davidson, T. (1996). Selected References on the Indians of Virginia, The District of Columbia, and Maryland.

Chicago Style (17th ed.) Citation

Roundtree, Helen, Stephen Potter, and Tom Davidson. Selected References on the Indians of Virginia, The District of Columbia, and Maryland. 1996.

MLA (9th ed.) Citation

Roundtree, Helen, et al. Selected References on the Indians of Virginia, The District of Columbia, and Maryland. 1996.