Cita APA (7a ed.)
Clark, L. H., & Tarr, I. S. (1959). Secondary school teaching methods.
Cita estilo Chicago (17a ed.)
Clark, Leonard H., y Irving S. Tarr. Secondary School Teaching Methods. 1959.
Cita MLA (9a ed.)
Clark, Leonard H., y Irving S. Tarr. Secondary School Teaching Methods. 1959.
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