Cita APA (7a ed.)

Wallen, R. W. (1956). Clinical-psychology: The study of persons. McGraw-Hill.

Cita Chicago Style (17a ed.)

Wallen, Richard W. Clinical-psychology: The Study of Persons. New York: McGraw-Hill, 1956.

Cita MLA (9a ed.)

Wallen, Richard W. Clinical-psychology: The Study of Persons. McGraw-Hill, 1956.