APA

Keyes F. P., . (1964). The explorer. New York: McGraw-Hill.

Chicago

Keyes Frances Parkinson, . 1964. The explorer. New York: McGraw-Hill.

Harvard

Keyes F. P., . (1964). The explorer. New York: McGraw-Hill.

MLA

Keyes Frances Parkinson, . The explorer. New York: McGraw-Hill. 1964.