Emrie, W. J. (1970). Recreation problems in the urban impacted areas of California. State of California, Dept. of Parks and Recreation.
Citace podle Chicago (17th ed.)Emrie, William J. Recreation Problems in the Urban Impacted Areas of California. Sacramento: State of California, Dept. of Parks and Recreation, 1970.
Citace podle MLA (8th ed.)Emrie, William J. Recreation Problems in the Urban Impacted Areas of California. State of California, Dept. of Parks and Recreation, 1970.
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