APA aipamena

Costello, L. (2003). Training young trees for structure and form. California: International Society of Arboriculture.

Chicago Style aipamena

Costello, Larry. Training Young Trees for Structure and Form. California: International Society of Arboriculture, 2003.

MLA aipamena

Costello, Larry. Training Young Trees for Structure and Form. California: International Society of Arboriculture, 2003.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.