Douglass, H. R. (1937). Secondary education for youth in modern America. American Council on Education.
Citace podle Chicago (17th ed.)Douglass, Harl R. Secondary Education for Youth in Modern America. Washington, D. C.: American Council on Education, 1937.
Citace podle MLA (8th ed.)Douglass, Harl R. Secondary Education for Youth in Modern America. American Council on Education, 1937.
Upozornění: Tyto citace jsou generovány automaticky. Nemusí být zcela správně podle citačních pravidel..