APA

Berlitz schools of languages of America, . (1949). The Berlitz self-teacher. New York: Grosset and Dunlap.

Chicago

Berlitz schools of languages of America, . 1949. The Berlitz self-teacher. New York: Grosset and Dunlap.

Harvard

Berlitz schools of languages of America, . (1949). The Berlitz self-teacher. New York: Grosset and Dunlap.

MLA

Berlitz schools of languages of America, . The Berlitz self-teacher. New York: Grosset and Dunlap. 1949.