Kelsey, C., Gray, H. R., & McLean, D. D. (1993). The budget process in parks and recreation: A case study manual (2nd ed.). American Association for Leisure and Recreation, American Alliance for Health, Physical Education, Recreation & Dance.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Kelsey, Craig, Howard R. Gray, و Daniel D. McLean. The Budget Process in Parks and Recreation: A Case Study Manual. 2nd ed. Reston, Va.: American Association for Leisure and Recreation, American Alliance for Health, Physical Education, Recreation & Dance, 1993.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Kelsey, Craig, et al. The Budget Process in Parks and Recreation: A Case Study Manual. 2nd ed. American Association for Leisure and Recreation, American Alliance for Health, Physical Education, Recreation & Dance, 1993.