APA (7th ed.) Citation
Hackshaw, A., & ET AL. (2012). Maternal smoking in pregnancy and birth defects: A systematic review based on 173.687 malformed cases and 11.7 million controls. https://doi.org/10.1093/humupd/dmr022
Chicago Style (17th ed.) Citation
Hackshaw, A., and ET AL. Maternal Smoking in Pregnancy and Birth Defects: A Systematic Review Based on 173.687 Malformed Cases and 11.7 Million Controls. 2012. https://doi.org/10.1093/humupd/dmr022.
MLA (9th ed.) Citation
Hackshaw, A., and ET AL. Maternal Smoking in Pregnancy and Birth Defects: A Systematic Review Based on 173.687 Malformed Cases and 11.7 Million Controls. 2012. https://doi.org/10.1093/humupd/dmr022.
Warning: These citations may not always be 100% accurate.