Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

Breysig, Kurt, i Michiel Valeton. Castrum Peregrini. Amsterdam: Castrum Peregrini Press, 1960.

Cita MLA (8th ed.)

Breysig, Kurt, i Michiel Valeton. Castrum Peregrini. Castrum Peregrini Press, 1960.