APA (7e ed.) Bronvermelding

Não informado. (2000). Trees magazine. National Arborist Association.

Chicago (17e ed.) Bronvermelding

Não informado. Trees Magazine. Santa Monica, Calif: National Arborist Association, 2000.

MLA (8e ed.) Bronvermelding

Não informado. Trees Magazine. National Arborist Association, 2000.

Let op: Deze citaties zijn niet altijd 100% accuraat.