Higbee, E. (1970). A question of priorities: New strategies for our urbanized world. William Morrow.
Chicago-referens (17:e uppl.)Higbee, Edward. A Question of Priorities: New Strategies for Our Urbanized World. New York: William Morrow, 1970.
MLA-referens (9:e uppl.)Higbee, Edward. A Question of Priorities: New Strategies for Our Urbanized World. William Morrow, 1970.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.