Metropolitan Council of the Twin Cities Area. (1970). Metropolitan development guide: Parks and open space policies, system plan, program. s.n.
Chicago-Zitierstil (17. Ausg.)Metropolitan Council of the Twin Cities Area. Metropolitan Development Guide: Parks and Open Space Policies, System Plan, Program. St. Paul, Minneapolis: s.n, 1970.
MLA-Zitierstil (9. Ausg.)Metropolitan Council of the Twin Cities Area. Metropolitan Development Guide: Parks and Open Space Policies, System Plan, Program. s.n, 1970.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.