APA (7th ed.) Citation

Gruhn, W. T. (1947). the modern junior high school. The Ronald Press.

Chicago Style (17th ed.) Citation

Gruhn, William T. The Modern Junior High School. The Ronald Press, 1947.

MLA (8th ed.) Citation

Gruhn, William T. The Modern Junior High School. The Ronald Press, 1947.

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