Leedham, J., & Unwin, D. (1971). Programmed learning in the schools / by J. Leedham and D. Unwin (2nd ed.). Longman.
Chicago Style (17th ed.) CitationLeedham, J., and D. Unwin. Programmed Learning in the Schools / by J. Leedham and D. Unwin. 2nd ed. Longman, 1971.
MLA (9th ed.) CitationLeedham, J., and D. Unwin. Programmed Learning in the Schools / by J. Leedham and D. Unwin. 2nd ed. Longman, 1971.
Warning: These citations may not always be 100% accurate.