APA

Clarke M. R., Zucker E. L., .Survey of the howling monkey population at La Pacifica: a seven-year follow-up. : .

Chicago

Clarke Margaret R, Zucker Evan L, .Survey of the howling monkey population at La Pacifica: a seven-year follow-up. : .

Harvard

Clarke M. R., Zucker E. L., .Survey of the howling monkey population at La Pacifica: a seven-year follow-up. : .

MLA

Clarke Margaret R, Zucker Evan L, .: . .