APA (7th ed.) Citation

Krug, E. A. (1960). The secondary school curriculum. Harper.

Chicago Style (17th ed.) Citation

Krug, Edward A. The Secondary School Curriculum. New York: Harper, 1960.

MLA (9th ed.) Citation

Krug, Edward A. The Secondary School Curriculum. Harper, 1960.

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