Cita APA (7th ed.)

Sheldon, W. H., Hartl, E. M., & McDermott, E. (1949). Varieties of delinquent youth; an introduction to constitutional psychiatry. Harper.

Cita Chicago (17th ed.)

Sheldon, William Herbert, Emil M. Hartl, i Eugene McDermott. Varieties of Delinquent Youth; an Introduction to Constitutional Psychiatry. New York: Harper, 1949.

Cita MLA (9th ed.)

Sheldon, William Herbert, et al. Varieties of Delinquent Youth; an Introduction to Constitutional Psychiatry. Harper, 1949.