Cita APA (7a ed.)

Constable, G., & Kritzeck, J. (1956). Petrus Venerabilis, 1156-1956: Studies and texts commemorating the eighth centenary of his death. Herder.

Cita Chicago Style (17a ed.)

Constable, Giles, y James Kritzeck. Petrus Venerabilis, 1156-1956: Studies and Texts Commemorating the Eighth Centenary of His Death. Romae: Herder, 1956.

Cita MLA (9a ed.)

Constable, Giles, y James Kritzeck. Petrus Venerabilis, 1156-1956: Studies and Texts Commemorating the Eighth Centenary of His Death. Herder, 1956.