APA (7th ed.) Citation

Foster, H. H. (1921). Principles of teaching in secondary education. Charles Scribner's sons.

Chicago Style (17th ed.) Citation

Foster, Herbert Hamilton. Principles of Teaching in Secondary Education. New York, Chicago [etc.]: Charles Scribner's sons, 1921.

MLA (9th ed.) Citation

Foster, Herbert Hamilton. Principles of Teaching in Secondary Education. Charles Scribner's sons, 1921.

Warning: These citations may not always be 100% accurate.