Cite
Coffee and smoking as risk factors of twin pregnancies: the Danish National Birth Cohort.
MLA
Morales-Suárez-Varela, Maria M., et al. “Coffee and Smoking as Risk Factors of Twin Pregnancies: The Danish National Birth Cohort.” Twin Research & Human Genetics, vol. 10, no. 4, Aug. 2007, pp. 597–603. EBSCOhost, https://doi.org/10.1375/twin.10.4.597.
APA
Morales-Suárez-Varela, M. M., Bech, B. H., Christensen, K., Olsen, J., & Morales-Suárez-Varela, M. M. (2007). Coffee and smoking as risk factors of twin pregnancies: the Danish National Birth Cohort. Twin Research & Human Genetics, 10(4), 597–603. https://doi.org/10.1375/twin.10.4.597
Chicago
Morales-Suárez-Varela, Maria M., Bodil Hammer Bech, Kaare Christensen, Jorn Olsen, and Maria M Morales-Suárez-Varela. 2007. “Coffee and Smoking as Risk Factors of Twin Pregnancies: The Danish National Birth Cohort.” Twin Research & Human Genetics 10 (4): 597–603. doi:10.1375/twin.10.4.597.