Meacham, M. L., & Wiesen, A. E. (1969). Changing classroom behavior: A manual for precision teaching. International Textbook Co..
Lua i Stíl Chicago (17ú heag.)Meacham, Merle L., agus Allen E. Wiesen. Changing Classroom Behavior: A Manual for Precision Teaching. Scranton: International Textbook Co., 1969.
Lua MLA (9ú heag.)Meacham, Merle L., agus Allen E. Wiesen. Changing Classroom Behavior: A Manual for Precision Teaching. International Textbook Co., 1969.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.