Não informado. (1935). Planning and Civic Comment. National Conference on State Parks.
Chicago-Zitierstil (17. Ausg.)Não informado. Planning and Civic Comment. Washington: National Conference on State Parks, 1935.
MLA-Zitierstil (8. Ausg.)Não informado. Planning and Civic Comment. National Conference on State Parks, 1935.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.