Cita APA (7a ed.)

Roberts, K. L., & Roberts, K. (1983). Youth and leisure. Leisure and recreation studies.

Cita Chicago Style (17a ed.)

Roberts, Kenneth L., y Kenneth Roberts. "Youth and Leisure." Leisure and Recreation Studies 1983.

Cita MLA (9a ed.)

Roberts, Kenneth L., y Kenneth Roberts. "Youth and Leisure." Leisure and Recreation Studies, 1983.