APA

Valdman A., . (1966). Trends in language teaching. New York: McGraw-Hill.

Chicago

Valdman Albert, . 1966. Trends in language teaching. New York: McGraw-Hill.

Harvard

Valdman A., . (1966). Trends in language teaching. New York: McGraw-Hill.

MLA

Valdman Albert, . Trends in language teaching. New York: McGraw-Hill. 1966.