Higgins, S. T., Heil, S. H., Badger, G. J., Skelly, J. M., Solomon, L. J., & Bernstein, I. M. (2009). Educational Disadvantage and Cigarette Smoking During Pregnancy.
Citação norma ChicagoHiggins, Stephen T., Sarah H. Heil, Gary J. Badger, Joan M. Skelly, Laura J. Solomon, and Ira M. Bernstein. Educational Disadvantage and Cigarette Smoking During Pregnancy. 2009.
MLA CitationHiggins, Stephen T., et al. Educational Disadvantage and Cigarette Smoking During Pregnancy. 2009.
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