APA (7th ed.) Citation

Hunger, H. e. a. (1985). Halley's Comet in History.

Chicago Style (17th ed.) Citation

Hunger, H. et al. Halley's Comet in History. 1985.

MLA (8th ed.) Citation

Hunger, H. et al. Halley's Comet in History. 1985.

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