Kharkova, O. A., Krettek, A., Grjibovski, A., Nieboer, E., & Odland, J. Ø. (2016). Prevalence of smoking before and during pregnancy and changes in this habit during pregnancy in Northwest Russia: A Murmansk county birth registry study. Reproductive Health, 13(1), .
Chicago Style (17th ed.) CitationKharkova, Olga Alexandrovna, Alexandra Krettek, Andrej Grjibovski, Evert Nieboer, and Jon Øyvind Odland. "Prevalence of Smoking Before and During Pregnancy and Changes in This Habit During Pregnancy in Northwest Russia: A Murmansk County Birth Registry Study." Reproductive Health 13, no. 1 (2016).
MLA (9th ed.) CitationKharkova, Olga Alexandrovna, et al. "Prevalence of Smoking Before and During Pregnancy and Changes in This Habit During Pregnancy in Northwest Russia: A Murmansk County Birth Registry Study." Reproductive Health, vol. 13, no. 1, 2016.