APA

Matthiessen P., . (1961). The cloud forest: a chronicle of the South American wilderness. New York: Viking Press.

Chicago

Matthiessen Peter, . 1961. The cloud forest: a chronicle of the South American wilderness. New York: Viking Press.

Harvard

Matthiessen P., . (1961). The cloud forest: a chronicle of the South American wilderness. New York: Viking Press.

MLA

Matthiessen Peter, . The cloud forest: a chronicle of the South American wilderness. New York: Viking Press. 1961.