Seasonal change in 24-hour blood pressure and heart rate is greater among smokers than nonsmokers.

MLA

Kristal-Boneh, E., et al. “Seasonal Change in 24-Hour Blood Pressure and Heart Rate Is Greater among Smokers than Nonsmokers.” Hypertension (Dallas, Tex. : 1979), vol. 30, no. 3 Pt 1, Sept. 1997, pp. 436–41. EBSCOhost, https://doi.org/10.1161/01.hyp.30.3.436.

APA

Kristal-Boneh, E., Harari, G., & Green, M. S. (1997). Seasonal change in 24-hour blood pressure and heart rate is greater among smokers than nonsmokers. Hypertension (Dallas, Tex. : 1979), 30(3 Pt 1), 436–441. https://doi.org/10.1161/01.hyp.30.3.436

Chicago

Kristal-Boneh, E, G Harari, and M S Green. 1997. “Seasonal Change in 24-Hour Blood Pressure and Heart Rate Is Greater among Smokers than Nonsmokers.” Hypertension (Dallas, Tex. : 1979) 30 (3 Pt 1): 436–41. doi:10.1161/01.hyp.30.3.436.