APA (7th ed.) Citation

Fretwell, E. K. (1931). Extra-curricular activities in secondary schools. Houghton Mifflin company.

Chicago Style (17th ed.) Citation

Fretwell, Elbert Kirtley. Extra-curricular Activities in Secondary Schools. Boston, New York [etc.]: Houghton Mifflin company, 1931.

MLA (9th ed.) Citation

Fretwell, Elbert Kirtley. Extra-curricular Activities in Secondary Schools. Houghton Mifflin company, 1931.