APA (7th ed.) Citation

Heer, F. (1962). The medieval world: Europe, 1100-1350 ([1st ed.].). World Pub. Co..

Chicago Style (17th ed.) Citation

Heer, Friedrich. The Medieval World: Europe, 1100-1350. [1st ed.]. Cleveland: World Pub. Co., 1962.

MLA (9th ed.) Citation

Heer, Friedrich. The Medieval World: Europe, 1100-1350. [1st ed.]. World Pub. Co., 1962.

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