Abnormal psychology : its concepts and theories

MLA

Hollingworth, Harry Levi. Abnormal Psychology : Its Concepts and Theories. New York: The Ronald press company, 1930.

APA

Hollingworth, H. Levi. (1930). Abnormal psychology : its concepts and theories. New York: The Ronald press company.

Chicago

Hollingworth, Harry Levi, Abnormal Psychology: Its Concepts and Theories. New York: The Ronald press company, 1930.