Não informado. (1938). Occupational Psychology. National Institute of Industrial Psychology.
Cita Chicago Style (17a ed.)Não informado. Occupational Psychology. London: National Institute of Industrial Psychology, 1938.
Cita MLA (8a ed.)Não informado. Occupational Psychology. National Institute of Industrial Psychology, 1938.
Precaución: Estas citas no son 100% exactas.