APA (7th ed.) Citation

Parkman, F., Margry, P., & Bassett, J. S. (1923). Letters of Francis Parkman to Pierre Margry. Dept. of history of Smith college.

Chicago Style (17th ed.) Citation

Parkman, Francis, Pierre Margry, and John Spencer Bassett. Letters of Francis Parkman to Pierre Margry. Northampton, Mass.: Dept. of history of Smith college, 1923.

MLA (9th ed.) Citation

Parkman, Francis, et al. Letters of Francis Parkman to Pierre Margry. Dept. of history of Smith college, 1923.