Cita APA (7a ed.)

Stoddard, J. L. (1915). Why is it ? (Third Edition.). The Vital Issue Co..

Cita Chicago Style (17a ed.)

Stoddard, John Lawson. Why Is It ? Third Edition. New York: The Vital Issue Co., 1915.

Cita MLA (9a ed.)

Stoddard, John Lawson. Why Is It ? Third Edition. The Vital Issue Co., 1915.