APA

Betts E. A., . (1950). American adventures. New York: American Book Co.

Chicago

Betts Emmett A, . 1950. American adventures. New York: American Book Co.

Harvard

Betts E. A., . (1950). American adventures. New York: American Book Co.

MLA

Betts Emmett A, . American adventures. New York: American Book Co. 1950.