De Boer, J. J. (1951). Teaching secondary English ([1st ed.].). McGraw-Hill.
Cita Chicago (17th ed.)De Boer, John James. Teaching Secondary English. [1st ed.]. New York: McGraw-Hill, 1951.
Cita MLA (9th ed.)De Boer, John James. Teaching Secondary English. [1st ed.]. McGraw-Hill, 1951.
Atenció: Aquestes cites poden no estar 100% correctes.