Dejin-Karlsson, E., Hanson, B. S., Ostergren, P. O., Ranstam, J., Isacsson, S. O., & Sjöberg, N. O. (1996). Psychosocial resources and persistent smoking in early pregnancy--a population study of women in their first pregnancy in Sweden.

Dejin-Karlsson, E., B S. Hanson, P O. Ostergren, J. Ranstam, S O. Isacsson, e N O. Sjöberg. Psychosocial Resources and Persistent Smoking in Early Pregnancy--a Population Study of Women in Their First Pregnancy in Sweden. 1996.

Dejin-Karlsson, E., et al. Psychosocial Resources and Persistent Smoking in Early Pregnancy--a Population Study of Women in Their First Pregnancy in Sweden. 1996.