Cigarette taxes and smoking during pregnancy.

MLA

Ringel, J. S., and W. N. Evans. “Cigarette Taxes and Smoking during Pregnancy.” American Journal of Public Health, vol. 91, no. 11, Nov. 2001, pp. 1851–56. EBSCOhost, https://doi.org/10.2105/ajph.91.11.1851.

APA

Ringel, J. S., & Evans, W. N. (2001). Cigarette taxes and smoking during pregnancy. American Journal of Public Health, 91(11), 1851–1856. https://doi.org/10.2105/ajph.91.11.1851

Chicago

Ringel, J S, and W N Evans. 2001. “Cigarette Taxes and Smoking during Pregnancy.” American Journal of Public Health 91 (11): 1851–56. doi:10.2105/ajph.91.11.1851.