World Leisure and Recreation Association Commission on Education, WLRA International Seminar on Leisure Education (1993 : Jerusalem), Ruskin, H., & Sivan, A. (1995). Leisure education: Towards the 21st century. Brigham Young University.
Citazione stile Chigago Style (17a edizione)World Leisure and Recreation Association Commission on Education, WLRA International Seminar on Leisure Education (1993 : Jerusalem), Hillel Ruskin, e Atara Sivan. Leisure Education: Towards the 21st Century. Provo, Utah: Brigham Young University, 1995.
Citatione MLA (9a ed.)World Leisure and Recreation Association Commission on Education, et al. Leisure Education: Towards the 21st Century. Brigham Young University, 1995.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.