Cita APA (7th ed.)
KAUFMAN, J., & ET AL. LEISURE USED AS A FORM OF BEHAVIOUR MODIFICATION.
Cita Chicago (17th ed.)
KAUFMAN, J.E, i ET AL. LEISURE USED AS A FORM OF BEHAVIOUR MODIFICATION.
Cita MLA (9th ed.)
KAUFMAN, J.E, i ET AL. LEISURE USED AS A FORM OF BEHAVIOUR MODIFICATION.
Atenció: Aquestes cites poden no estar 100% correctes.