Ewan, E. E., Hursh, S. R., Madden, G. J., & Smethells, J. R. Tests of behavioral-economic assessments of relative reinforcer efficacy: Economic substitutes.
استشهاد بنمط شيكاغوEwan, Eric E., Steven R. Hursh, Gregory J. Madden, و John R. Smethells. Tests of Behavioral-economic Assessments of Relative Reinforcer Efficacy: Economic Substitutes.
MLA استشهادEwan, Eric E., Steven R. Hursh, Gregory J. Madden, و John R. Smethells. Tests of Behavioral-economic Assessments of Relative Reinforcer Efficacy: Economic Substitutes.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.