APA

Janzen D. H., .No park is an island: increase in interference from outside as park size decreases. : .

Chicago

Janzen Daniel H, .No park is an island: increase in interference from outside as park size decreases. : .

Harvard

Janzen D. H., .No park is an island: increase in interference from outside as park size decreases. : .

MLA

Janzen Daniel H, .: . .