Callender, P. (1969). Programmed Learning: Its development and structure. Longmans.
Chicago Style (17. basım) AtıfCallender, Patricia. Programmed Learning: Its Development and Structure. London: Longmans, 1969.
MLA (9th ed.) AtıfCallender, Patricia. Programmed Learning: Its Development and Structure. Longmans, 1969.
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