APA (7th ed.) Citation

Heer, F., & Sondheimer, J. (1962). The medieval world: Europe 1100-1350 (2nd printing.). World Publishing Company.

Chicago Style (17th ed.) Citation

Heer, Friedrich, and Janet Sondheimer. The Medieval World: Europe 1100-1350. 2nd printing. Cleveland [etc.]: World Publishing Company, 1962.

MLA (9th ed.) Citation

Heer, Friedrich, and Janet Sondheimer. The Medieval World: Europe 1100-1350. 2nd printing. World Publishing Company, 1962.