Cita APA

(2007). 90 world-class activities by 90 world-class trainers. San Francisco, CA: J. Wiley & Sons.

Citación estilo Chicago

90 World-class Activities By 90 World-class Trainers. San Francisco, CA: J. Wiley & Sons, 2007.

Cita MLA

90 World-class Activities By 90 World-class Trainers. San Francisco, CA: J. Wiley & Sons, 2007.