APA (7th ed.) Citation

Birtles, Whittall, & Gardner. Take up rock climbing. Learners Press.

Chicago Style (17th ed.) Citation

Birtles, Whittall, and Gardner. Take Up Rock Climbing. New Delhi: Learners Press.

MLA (8th ed.) Citation

Birtles, et al. Take Up Rock Climbing. Learners Press.

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