APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (8th ed.) Citation

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

Warning: These citations may not always be 100% accurate.