1. Teaching machines can help dietitians;HARTMAN;Mod. Hosp.,1964
2. Slides plus recorded commentary instruct food service workers;MIDDLETON;Hospitals,1965
3. KONZ, S., AND MIDDLETON, R.: Work Instruction Programs for the Food Service Industry. Final Report. U. S. Off. of Educ. Pub. 497, 1967.
4. The Research on Programmed Instruction;SCHRAMM,1964
5. How DuPont developed programmed instruction;ALTMAIER;Hydrocarbon Processing,1965