APA (7th ed.) Citation

Rupert, P., Albemarle, G. M., Powell, J. R., & Timings, E. K. The Rupert and Monck letter book, 1666: Together with supporting documents.

Chicago Style (17th ed.) Citation

Rupert, Prince, George Monck Albemarle, J. R. Powell, and Edward Kenneth Timings. The Rupert and Monck Letter Book, 1666: Together with Supporting Documents.

MLA (9th ed.) Citation

Rupert, Prince, et al. The Rupert and Monck Letter Book, 1666: Together with Supporting Documents.