Cita APA (7a ed.)

Betz, J., & Givord, R. (1963). Christus - Petra- Petrus. Editions Xavier Mappus.

Cita Chicago Style (17a ed.)

Betz, Johannes, y Robert Givord. Christus - Petra- Petrus. Le Puy: Editions Xavier Mappus, 1963.

Cita MLA (9a ed.)

Betz, Johannes, y Robert Givord. Christus - Petra- Petrus. Editions Xavier Mappus, 1963.