Cita APA (7a ed.)

Toynbee, J. M. C., & Perkins, J. W. (1956). The shrine of St. Peter and the Vatican excavations ([1st published].). Longmans, Green & Co.

Cita Chicago Style (17a ed.)

Toynbee, J. M. C., y John Ward Perkins. The Shrine of St. Peter and the Vatican Excavations. [1st published]. London [etc.]: Longmans, Green & Co, 1956.

Cita MLA (9a ed.)

Toynbee, J. M. C., y John Ward Perkins. The Shrine of St. Peter and the Vatican Excavations. [1st published]. Longmans, Green & Co, 1956.