APA (7th ed.) Citation

Lonely Planet Publications (Firm), Denniston, J. R., Marr, A., & Lukas, D. (2004). Grand Canyon National Park. Lonely Planet Publications.

Chicago Style (17th ed.) Citation

Lonely Planet Publications (Firm), Jennifer Rasin Denniston, Amy Marr, and David Lukas. Grand Canyon National Park. Footscray, Vic. ; Oakland [Calif.]: Lonely Planet Publications, 2004.

MLA (9th ed.) Citation

Lonely Planet Publications (Firm), et al. Grand Canyon National Park. Lonely Planet Publications, 2004.