APA (7th ed.) Citation

Penn, T., Kilbourne, J. D., & Wainwright, N. B. (1968). The Thomas Penn papers, 1729-1832: At the Historical Society of Pennsylvania. Historical Society of Pennsylvania.

Chicago Style (17th ed.) Citation

Penn, Thomas, John D. Kilbourne, and Nicholas B. Wainwright. The Thomas Penn Papers, 1729-1832: At the Historical Society of Pennsylvania. [Philadelphia]: Historical Society of Pennsylvania, 1968.

MLA (9th ed.) Citation

Penn, Thomas, et al. The Thomas Penn Papers, 1729-1832: At the Historical Society of Pennsylvania. Historical Society of Pennsylvania, 1968.