Não informado. Trees and life. Men of the Trees Society.
Chicago-Zitierstil (17. Ausg.)Não informado. Trees and Life. London: Men of the Trees Society.
MLA-Zitierstil (8. Ausg.)Não informado. Trees and Life. Men of the Trees Society.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.