Douglass, H. R. (1962). Trends and issues in secondary education. Center for Applied Research in Education.
Citação norma ChicagoDouglass, Harl R. Trends and Issues in Secondary Education. Washington: Center for Applied Research in Education, 1962.
Citação norma MLADouglass, Harl R. Trends and Issues in Secondary Education. Center for Applied Research in Education, 1962.
Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.