Hullfish, H. G., & Smith, P. G. (1961). Reflective thinking: The method of education. Dodd, Mead.
Cita Chicago (17th ed.)Hullfish, Henry Gordon, i Philip G. Smith. Reflective Thinking: The Method of Education. New York: Dodd, Mead, 1961.
Cita MLA (9th ed.)Hullfish, Henry Gordon, i Philip G. Smith. Reflective Thinking: The Method of Education. Dodd, Mead, 1961.
Atenció: Aquestes cites poden no estar 100% correctes.