Kraus, R. G. (1977). Recreation today: Program planning and leadership (Second edition.). Goodyear Publishing company.
Chicago-Zitierstil (17. Ausg.)Kraus, Richard G. Recreation Today: Program Planning and Leadership. Second edition. Santa Monica, California: Goodyear Publishing company, 1977.
MLA-Zitierstil (9. Ausg.)Kraus, Richard G. Recreation Today: Program Planning and Leadership. Second edition. Goodyear Publishing company, 1977.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.