Emrie, W. J. (1970). Recreation problems in the urban impacted areas of California. State of California, Dept. of Parks and Recreation.
Chicago-Zitierstil (17. Ausg.)Emrie, William J. Recreation Problems in the Urban Impacted Areas of California. Sacramento: State of California, Dept. of Parks and Recreation, 1970.
MLA-Zitierstil (8. Ausg.)Emrie, William J. Recreation Problems in the Urban Impacted Areas of California. State of California, Dept. of Parks and Recreation, 1970.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.