APA (7th ed.) Citation

Walker, K., & Chadwick, P. (1991). Learn rock climbing in a weekend. D. Kindersley.

Chicago Style (17th ed.) Citation

Walker, Kevin, and Peter Chadwick. Learn Rock Climbing in a Weekend. London: D. Kindersley, 1991.

MLA (9th ed.) Citation

Walker, Kevin, and Peter Chadwick. Learn Rock Climbing in a Weekend. D. Kindersley, 1991.