Cita APA (7a ed.)

Lack, L., Bailey, M., Lovato, N., & al, e. (2009). Chronotype differences in circadian rhythms of temperature, melatonin, and sleepiness as measured in a modified constant routine protocol. Dove Medical Press.

Cita Chicago Style (17a ed.)

Lack, Leon, Michelle Bailey, Nicole Lovato, y et al. Chronotype Differences in Circadian Rhythms of Temperature, Melatonin, and Sleepiness as Measured in a Modified Constant Routine Protocol. Dove Medical Press, 2009.

Cita MLA (8a ed.)

Lack, Leon, et al. Chronotype Differences in Circadian Rhythms of Temperature, Melatonin, and Sleepiness as Measured in a Modified Constant Routine Protocol. Dove Medical Press, 2009.