Knapp, R. H., & Gustavson, R. G. (1947). Unesco and Nebraska Secondary School Youth. University of Nebraska.
Cita Chicago Style (17a ed.)Knapp, Royce H., y R. G. Gustavson. Unesco and Nebraska Secondary School Youth. Nebraska: University of Nebraska, 1947.
Cita MLA (9a ed.)Knapp, Royce H., y R. G. Gustavson. Unesco and Nebraska Secondary School Youth. University of Nebraska, 1947.
Precaución: Estas citas no son 100% exactas.