APA aipamena

International Society of Arboriculture. (2003). Introduction to arboriculture: Tree biology. Champaign: International Society of Arboriculture.

Chicago Style aipamena

International Society of Arboriculture. Introduction to Arboriculture: Tree Biology. Champaign: International Society of Arboriculture, 2003.

MLA aipamena

International Society of Arboriculture. Introduction to Arboriculture: Tree Biology. Champaign: International Society of Arboriculture, 2003.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.