Cita APA (7a ed.)

Roger-Marx, C. (1949). Constantin Guys: 1802-1892. Braun.

Cita Chicago Style (17a ed.)

Roger-Marx, Claude. Constantin Guys: 1802-1892. Paris: Braun, 1949.

Cita MLA (9a ed.)

Roger-Marx, Claude. Constantin Guys: 1802-1892. Braun, 1949.