APA (7th ed.) Citation

Lorge, I. (1959). The Lorge formula for estimating difficulty of reading materials. Bureau of Publications, Teachers College, Columbia University.

Chicago Style (17th ed.) Citation

Lorge, Irving. The Lorge Formula for Estimating Difficulty of Reading Materials. New York: Bureau of Publications, Teachers College, Columbia University, 1959.

MLA (9th ed.) Citation

Lorge, Irving. The Lorge Formula for Estimating Difficulty of Reading Materials. Bureau of Publications, Teachers College, Columbia University, 1959.