Παραπομπή σε μορφή APA (7η εκδ.)

Não informado. Trees and life. Men of the Trees Society.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Não informado. Trees and Life. London: Men of the Trees Society.

Παραπομπή σε μορφή MLA (8th εκδ.)

Não informado. Trees and Life. Men of the Trees Society.

Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.