APA (7th ed.) Citation

Undset, S., Page, T., & Nunnally, T. (2001). The unknown Sigrid Undset: Jenny and other works. Steerforth Press.

Chicago Style (17th ed.) Citation

Undset, Sigrid, Tim Page, and Tiina Nunnally. The Unknown Sigrid Undset: Jenny and Other Works. South Royalton, Vt.: Steerforth Press, 2001.

MLA (9th ed.) Citation

Undset, Sigrid, et al. The Unknown Sigrid Undset: Jenny and Other Works. Steerforth Press, 2001.