APA

Packard V. O., . (1962). The pyramid climbers. New York: McGraw-Hill.

Chicago

Packard Vance Oakley, . 1962. The pyramid climbers. New York: McGraw-Hill.

Harvard

Packard V. O., . (1962). The pyramid climbers. New York: McGraw-Hill.

MLA

Packard Vance Oakley, . The pyramid climbers. New York: McGraw-Hill. 1962.