@article{Hanna1994,
author = {Hanna, E.Z. and Faden, V.B. and Dufour, M.C. },
title= {The motivational correlates of drinking, smoking, and illicit drug use during pregnancy},
year = {1994},
doi = {10.1016/S0899-3289(94)90181-3},
journal = {Journal of Substance Abuse },
volume = {6},
number = {2},
pages = {155--167},
}