Παραπομπή APA

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

Παραπομπή Chicago Style

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

Παραπομπή MLA

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

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