Cita APA (7a ed.)
Williamson, E., & Cowan, J. L. (1966). The american students freedom of expression: A research appraisal.
Cita estilo Chicago (17a ed.)
Williamson, E.G, y John L. Cowan. The American Students Freedom of Expression: A Research Appraisal. 1966.
Cita MLA (9a ed.)
Williamson, E.G, y John L. Cowan. The American Students Freedom of Expression: A Research Appraisal. 1966.
Precaución: Estas citas no son 100% exactas.