Northup, J., Fusilier, I., Swanson, V., Huete, J., Bruce, T., Freeland, J., . . . Edwards, S. (1999). Further analysis of the separate and interactive effects of methylphenidate and common classroom contingencies.

Northup, J., I. Fusilier, V. Swanson, J. Huete, T. Bruce, J. Freeland, V. Gulley, und S. Edwards. Further Analysis of the Separate and Interactive Effects of Methylphenidate and Common Classroom Contingencies. 1999.

Northup, J., et al. Further Analysis of the Separate and Interactive Effects of Methylphenidate and Common Classroom Contingencies. 1999.