APA

Skinner C. E., . (1941). Child psychology. New York: Macmillan.

Chicago

Skinner Charles Edward, . 1941. Child psychology. New York: Macmillan.

Harvard

Skinner C. E., . (1941). Child psychology. New York: Macmillan.

MLA

Skinner Charles Edward, . Child psychology. New York: Macmillan. 1941.