Schell, E. H. n. 1., & Schell, E. H. n. 1. (1957). Technique of executive control (8. edition.). New York, New York.
Citación estilo ChicagoSchell, Erwin Haskell n. 1889, y Erwin Haskell n. 1889 Schell. Technique of Executive Control. 8. edition. New York, New York, 1957.
Cita MLASchell, Erwin Haskell n. 1889, y Erwin Haskell n. 1889 Schell. Technique of Executive Control. 8. edition. New York, New York, 1957.
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