Yoast, R.; Williams, M. A.; Deitchman, S. D.; Champion, H. C. (2001). «Report of the Council on Scientific Affairs». Journal of Addictive Diseases. 20 (2): 15–40. PMID11318395. doi:10.1300/J069v20n02_03
Yoast, R.; Williams, M. A.; Deitchman, S. D.; Champion, H. C. (2001). «Report of the Council on Scientific Affairs». Journal of Addictive Diseases. 20 (2): 15–40. PMID11318395. doi:10.1300/J069v20n02_03