Lattal, K. A., & Boyer, S. S. (1980). Alternative reinforcement effects on fixed-interval performance.
Chicago Style aipamenaLattal, Kennon A., and Susan S. Boyer. Alternative Reinforcement Effects On Fixed-interval Performance. 1980.
MLA aipamenaLattal, Kennon A., and Susan S. Boyer. Alternative Reinforcement Effects On Fixed-interval Performance. 1980.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.