Bossing, N. L. (1942). Progressive methods of teaching in secondary schools (Rev. ed.). Houghton Mifflin Company.
Cita Chicago Style (17a ed.)Bossing, Nelson L. Progressive Methods of Teaching in Secondary Schools. Rev. ed. Boston, New York [etc.]: Houghton Mifflin Company, 1942.
Cita MLA (8a ed.)Bossing, Nelson L. Progressive Methods of Teaching in Secondary Schools. Rev. ed. Houghton Mifflin Company, 1942.
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