APA (7e ed.) Bronvermelding

Emrie, W. J. (1970). Recreation problems in the urban impacted areas of California. State of California, Dept. of Parks and Recreation.

Chicago (17e ed.) Bronvermelding

Emrie, William J. Recreation Problems in the Urban Impacted Areas of California. Sacramento: State of California, Dept. of Parks and Recreation, 1970.

MLA (8e ed.) Bronvermelding

Emrie, William J. Recreation Problems in the Urban Impacted Areas of California. State of California, Dept. of Parks and Recreation, 1970.