Cita APA (7a ed.)

Gies, J., & Gies, F. (1979). Life in a medieval castle (1st Harper colophon ed.). Perennial Library.

Cita Chicago Style (17a ed.)

Gies, Joseph, y Frances Gies. Life in a Medieval Castle. 1st Harper colophon ed. New York: Perennial Library, 1979.

Cita MLA (8a ed.)

Gies, Joseph, y Frances Gies. Life in a Medieval Castle. 1st Harper colophon ed. Perennial Library, 1979.

Precaución: Estas citas no son 100% exactas.