APA (7th ed.) Citation

Douglass, H. R., & Boardman, C. W. (1934). Supervision in secondary schools. Houghton Mifflin company.

Chicago Style (17th ed.) Citation

Douglass, Harl Roy, and Charles Willis Boardman. Supervision in Secondary Schools. Boston, New York [etc.]: Houghton Mifflin company, 1934.

MLA (9th ed.) Citation

Douglass, Harl Roy, and Charles Willis Boardman. Supervision in Secondary Schools. Houghton Mifflin company, 1934.