Cita APA (7a ed.)

Breysig, K., George, S., & Valeton, M. (1960). Castrum Peregrini. Castrum Peregrini Press.

Cita Chicago Style (17a ed.)

Breysig, Kurt, Stefan George, y Michiel Valeton. Castrum Peregrini. Amsterdam: Castrum Peregrini Press, 1960.

Cita MLA (8a ed.)

Breysig, Kurt, et al. Castrum Peregrini. Castrum Peregrini Press, 1960.