Cita APA (7a ed.)

Rohrbaugh, L. H. (1940). Vectors in Group Change. University of Pennsylvania.

Cita Chicago Style (17a ed.)

Rohrbaugh, Lewis Henry. Vectors in Group Change. Philadelphia: University of Pennsylvania, 1940.

Cita MLA (9a ed.)

Rohrbaugh, Lewis Henry. Vectors in Group Change. University of Pennsylvania, 1940.