Cita APA (7a ed.)

Undset, S., & Metzger, M. (1952). Catherine de Sienne. Stock.

Cita Chicago Style (17a ed.)

Undset, Sigrid, y Marthe Metzger. Catherine De Sienne. Paris: Stock, 1952.

Cita MLA (9a ed.)

Undset, Sigrid, y Marthe Metzger. Catherine De Sienne. Stock, 1952.