Smith, S. (1979). Ideas of the great educators. Barnes & Noble Books.
Cita Chicago (17th ed.)Smith, Samuel. Ideas of the Great Educators. New York: Barnes & Noble Books, 1979.
Cita MLA (9th ed.)Smith, Samuel. Ideas of the Great Educators. Barnes & Noble Books, 1979.
Atenció: Aquestes cites poden no estar 100% correctes.