APA ציטוט
GRAFF, R., & LIBBY, M. (1999). A COMPARISON OF PRESESSION AND WITHIN-SESSION REINFORCEMENT CHOICE.
Chicago Style (17th ed.) Citation
GRAFF, R.B, and M.E LIBBY. A COMPARISON OF PRESESSION AND WITHIN-SESSION REINFORCEMENT CHOICE. 1999.
ציטוט MLA
GRAFF, R.B, and M.E LIBBY. A COMPARISON OF PRESESSION AND WITHIN-SESSION REINFORCEMENT CHOICE. 1999.
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