Cita APA (7a ed.)

Perceval, A. P., & Grey, C. G. (2010). A letter to the Right Honourable Earl Grey, on the obligation of the coronation oath. Kessinger.

Cita Chicago Style (17a ed.)

Perceval, A. P., y Charles Grey Grey. A Letter to the Right Honourable Earl Grey, on the Obligation of the Coronation Oath. [Whitefish, MT]: Kessinger, 2010.

Cita MLA (9a ed.)

Perceval, A. P., y Charles Grey Grey. A Letter to the Right Honourable Earl Grey, on the Obligation of the Coronation Oath. Kessinger, 2010.