Cita APA (7a ed.)

Olszewska, A., & Roberts, K. (1989). Leisure and life-style: A comparative analysis of free time. Sage.

Cita Chicago Style (17a ed.)

Olszewska, Anna, y Kenneth Roberts. Leisure and Life-style: A Comparative Analysis of Free Time. London [etc.]: Sage, 1989.

Cita MLA (9a ed.)

Olszewska, Anna, y Kenneth Roberts. Leisure and Life-style: A Comparative Analysis of Free Time. Sage, 1989.