National Arborist Association. (2000). Basic training for ground operations in tree care workbook. New York: International Society of Arboriculture and National Arborist Association.
Trích dẫn kiểu ChicagoNational Arborist Association. Basic Training for Ground Operations in Tree Care Workbook. New York: International Society of Arboriculture and National Arborist Association, 2000.
MLA引文National Arborist Association. Basic Training for Ground Operations in Tree Care Workbook. New York: International Society of Arboriculture and National Arborist Association, 2000.
警告：這些引文格式不一定是100％准確.