APA (7th ed.) Citation
Duffy, G. G., Roehler, L. R., & Sherman, G. B. (1977). How to teach reading systematically (2nd ed.). Happer & Row Pub..
Chicago Style (17th ed.) Citation
Duffy, Gerald G., Laura R. Roehler, and George B. Sherman. How to Teach Reading Systematically. 2nd ed. New York: Happer & Row Pub., 1977.
MLA (9th ed.) Citation
Duffy, Gerald G., et al. How to Teach Reading Systematically. 2nd ed. Happer & Row Pub., 1977.
Warning: These citations may not always be 100% accurate.