APA (7th ed.) Citation

Koos, L. V. (1955). Junior high school trends. Harper.

Chicago Style (17th ed.) Citation

Koos, Leonard V. Junior High School Trends. New York: Harper, 1955.

MLA (9th ed.) Citation

Koos, Leonard V. Junior High School Trends. Harper, 1955.

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