APA aipamena

National Arborist Association. (2000). Basic training for ground operations in tree care workbook. New York: International Society of Arboriculture and National Arborist Association.

Chicago Style aipamena

National Arborist Association. Basic Training for Ground Operations in Tree Care Workbook. New York: International Society of Arboriculture and National Arborist Association, 2000.

MLA aipamena

National Arborist Association. Basic Training for Ground Operations in Tree Care Workbook. New York: International Society of Arboriculture and National Arborist Association, 2000.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.