O'Day, E. F. (1971). Programmed instruction techniques and trends. Appleton Century Crofts.
Chicago Edition CitationO'Day, Edward F. Programmed Instruction Techniques and Trends. Appleton Century Crofts, 1971.
MLA Edition CitationO'Day, Edward F. Programmed Instruction Techniques and Trends. Appleton Century Crofts, 1971.
Warning: These citations may not always be 100% accurate.