Cita APA

Okun, M. L., Schetter, C. D., & Glynn, L. M. (2011). Poor Sleep Quality is Associated with Preterm Birth. Associated Professional Sleep Societies, LLC.

Chicago Style Citation

Okun, Michele L., Christine Dunkel Schetter, i Laura M. Glynn. Poor Sleep Quality Is Associated With Preterm Birth. Associated Professional Sleep Societies, LLC, 2011.

Cita MLA

Okun, Michele L., Christine Dunkel Schetter, i Laura M. Glynn. Poor Sleep Quality Is Associated With Preterm Birth. Associated Professional Sleep Societies, LLC, 2011.