APA (7th ed.) Citation

Hoffman & Krings. (2007). 100 wonders of the world. Parragon.

Chicago Style (17th ed.) Citation

Hoffman and Krings. 100 Wonders of the World. England: Parragon, 2007.

MLA (8th ed.) Citation

Hoffman and Krings. 100 Wonders of the World. Parragon, 2007.

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