Stebbins, R. A. The extra-professional life: Leisure, retirement and unemployment.
Cita Chicago Style (17a ed.)Stebbins, Robert A. The Extra-professional Life: Leisure, Retirement and Unemployment.
Cita MLA (9a ed.)Stebbins, Robert A. The Extra-professional Life: Leisure, Retirement and Unemployment.
警告：这些引文格式不一定是100％准确.