Russell, R. V. (2017). Pastimes: The context of contemporary leisure.
Cordes, K. A., & Ibrahim, H. (1999). Applications in recreation & leisure: For today and the future. Boston: WCB/McGraw-Hill.
Kelly, J. R. (1996). Leisure. Englewood Cliffs, N.J: Prentice Hall.
Freysinger, V. J., Kelly, J. R., & Kelly, J. R. (2004). 21st century leisure: Current issues. State College, Pa: Venture Pub.