Cita APA

Gibson, H. J., & Singleton, J. F. (2012). Leisure and aging: Theory and practice. Champaign, IL: Human Kinetics.

Citación estilo Chicago

Gibson, Heather J., y Jerome F. Singleton. Leisure and Aging: Theory and Practice. Champaign, IL: Human Kinetics, 2012.

Cita MLA

Gibson, Heather J., y Jerome F. Singleton. Leisure and Aging: Theory and Practice. Champaign, IL: Human Kinetics, 2012.