APA (7th ed.) Citation

Geffcken, J. (1978). The last days of Greco-Roman paganism. Europe in the middle ages.

Chicago Style (17th ed.) Citation

Geffcken, Johannes. "The Last Days of Greco-Roman Paganism." Europe in the Middle Ages 1978.

MLA (8th ed.) Citation

Geffcken, Johannes. "The Last Days of Greco-Roman Paganism." Europe in the Middle Ages, 1978.

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