Citazione Stile APA (7a Edizione)

Johnson, D., & Johnson, J. E. (2007). Universal religions in world history: The spread of Buddhism, Christianity, and Islam to 1500. McGraw-Hill.

Citazione stile Chigago Style (17a edizione)

Johnson, Donald, e Jean Elliot Johnson. Universal Religions in World History: The Spread of Buddhism, Christianity, and Islam to 1500. Boston [u.a.]: McGraw-Hill, 2007.

Citatione MLA (9a ed.)

Johnson, Donald, e Jean Elliot Johnson. Universal Religions in World History: The Spread of Buddhism, Christianity, and Islam to 1500. McGraw-Hill, 2007.