APA (7th ed.) Citation

Jordan, W. C. (2002). Europe in the High Middle Ages. Penguin Books.

Chicago Style (17th ed.) Citation

Jordan, William Chester. Europe in the High Middle Ages. Penguin Books, 2002.

MLA (9th ed.) Citation

Jordan, William Chester. Europe in the High Middle Ages. Penguin Books, 2002.

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