Cita APA (7a ed.)

Greisley, R. (1832). The life and pontificate of Gregory VII. Logman.

Cita Chicago Style (17a ed.)

Greisley, Roger. The Life and Pontificate of Gregory VII. London: Logman, 1832.

Cita MLA (9a ed.)

Greisley, Roger. The Life and Pontificate of Gregory VII. Logman, 1832.