[1] Walker, H. M., Kavanagh, K., Stiller, B., Golly, A., Severson, H. H. & Feil, E. G. (1998). First Step to Success: An Early Intervention Approach for Preventing School Antisocial Behavior. Journal of Emotional and Behavioral Disorders, 6(2), 66–80.
[2] Walker, H. M., Golly, A., McLane, J. Z. & Kimmich, M. (2005). The Oregon First Step to Success Replication Initiative. Journal of Emotional and Behavioral Disorders, 13(3), 163–172. https://doi.org/10.1177/10634266050130030401
[3] Walker, H. M., Seeley, J. R., Small, J., Severson, H. H., Graham, B. A., Feil, E. G., Serna, L., Golly, A. M. & Forness, S. R. (2009). A Randomized Controlled Trial of the First Step to Success Early Intervention. Journal of Emotional and Behavioral Disorders, 17(4), 197–212. https://doi.org/10.1177/1063426609341645