APA

Williamson E. G., . (1950). Counseling adolescents. New York: McGraw-Hill.

Chicago

Williamson E G, . 1950. Counseling adolescents. New York: McGraw-Hill.

Harvard

Williamson E. G., . (1950). Counseling adolescents. New York: McGraw-Hill.

MLA

Williamson E G, . Counseling adolescents. New York: McGraw-Hill. 1950.