APA
Vgontzas A. N., Papanicolaou D. A., Bixler E. O., Lotsikas A., Zachman K., Kales A., Prolo P., Wong M. L., Licinio J., Gold P. W., Hermida R. C., Mastorakos G. & Chrousos G. P. (19990819). Circadian interleukin-6 secretion and quantity and depth of sleep. : The Journal of clinical endocrinology and metabolism.
Chicago
Vgontzas A N, Papanicolaou D A, Bixler E O, Lotsikas A, Zachman K, Kales A, Prolo P, Wong M L, Licinio J, Gold P W, Hermida R C, Mastorakos G and Chrousos G P. 19990819. Circadian interleukin-6 secretion and quantity and depth of sleep. : The Journal of clinical endocrinology and metabolism.
Harvard
Vgontzas A. N., Papanicolaou D. A., Bixler E. O., Lotsikas A., Zachman K., Kales A., Prolo P., Wong M. L., Licinio J., Gold P. W., Hermida R. C., Mastorakos G. and Chrousos G. P. (19990819). Circadian interleukin-6 secretion and quantity and depth of sleep. : The Journal of clinical endocrinology and metabolism.
MLA
Vgontzas A N, Papanicolaou D A, Bixler E O, Lotsikas A, Zachman K, Kales A, Prolo P, Wong M L, Licinio J, Gold P W, Hermida R C, Mastorakos G and Chrousos G P. Circadian interleukin-6 secretion and quantity and depth of sleep. : The Journal of clinical endocrinology and metabolism. 19990819.