APA (7th ed.) Citation

Elphinston, J., & Pook, P. (2010). The core workout : a definitive guide to Swiss ball training for athletes, coaches, & fitness professionals / Joanne Elphinston & Paul Pook: A definitive guide to Swiss ball training for athletes, coaches, & fitness professionals (4th ed.). Lotus.

Chicago Style (17th ed.) Citation

Elphinston, Joanne, and Paul Pook. The Core Workout : A Definitive Guide to Swiss Ball Training for Athletes, Coaches, & Fitness Professionals / Joanne Elphinston & Paul Pook: A Definitive Guide to Swiss Ball Training for Athletes, Coaches, & Fitness Professionals. 4th ed. Chichester: Lotus, 2010.

MLA (9th ed.) Citation

Elphinston, Joanne, and Paul Pook. The Core Workout : A Definitive Guide to Swiss Ball Training for Athletes, Coaches, & Fitness Professionals / Joanne Elphinston & Paul Pook: A Definitive Guide to Swiss Ball Training for Athletes, Coaches, & Fitness Professionals. 4th ed. Lotus, 2010.

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