Douglass, H. R., & Boardman, C. W. (1934). Supervision in secondary schools. Houghton Mifflin company.
Chicago Style (17th ed.) CitationDouglass, Harl Roy, and Charles Willis Boardman. Supervision in Secondary Schools. Boston, New York [etc.]: Houghton Mifflin company, 1934.
MLA (9th ed.) CitationDouglass, Harl Roy, and Charles Willis Boardman. Supervision in Secondary Schools. Houghton Mifflin company, 1934.
Warning: These citations may not always be 100% accurate.