APA استشهاد

Polak, M. A., Houghton, L. A., Reeder, A. I., Harper, M. J., & Conner, T. S. (2014). Serum 25-Hydroxyvitamin D Concentrations and Depressive Symptoms among Young Adult Men and Women. Nutrients.

استشهاد بنمط شيكاغو

Polak, Maria A., Lisa A. Houghton, Anthony I. Reeder, Michelle J. Harper, و Tamlin S. Conner. "Serum 25-Hydroxyvitamin D Concentrations and Depressive Symptoms Among Young Adult Men and Women." Nutrients 2014.

MLA استشهاد

Polak, Maria A., et al. "Serum 25-Hydroxyvitamin D Concentrations and Depressive Symptoms Among Young Adult Men and Women." Nutrients 2014.

تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.