Cite
Sleep during a regular week night: a twin-sibling study.
MLA
Boomsma, Dorret I., et al. “Sleep during a Regular Week Night: A Twin-Sibling Study.” Twin Research & Human Genetics, vol. 11, no. 5, Oct. 2008, pp. 538–45. EBSCOhost, https://doi.org/10.1375/twin.11.5.538.
APA
Boomsma, D. I., Van Someren, E. J. W., Beem, A. L., De Geus, E. J. C., & Willemsen, G. (2008). Sleep during a regular week night: a twin-sibling study. Twin Research & Human Genetics, 11(5), 538–545. https://doi.org/10.1375/twin.11.5.538
Chicago
Boomsma, Dorret I., Eus J. W. Van Someren, A. Leo Beem, Eco J. C. De Geus, and Gonneke Willemsen. 2008. “Sleep during a Regular Week Night: A Twin-Sibling Study.” Twin Research & Human Genetics 11 (5): 538–45. doi:10.1375/twin.11.5.538.