Zhong, Q., Gelaye, B., Sánchez, S. E., & Williams, M. A. (2015). Psychometric Properties of the Pittsburgh Sleep Quality Index (PSQI) in a Cohort of Peruvian Pregnant Women. J Clin Sleep Med.
Chicago-стиль цитированияZhong, Qiu-Yue, Bizu Gelaye, Sixto E. Sánchez, and Michelle A. Williams. "Psychometric Properties of the Pittsburgh Sleep Quality Index (PSQI) in a Cohort of Peruvian Pregnant Women." J Clin Sleep Med 2015.
MLA-цитированиеZhong, Qiu-Yue, Bizu Gelaye, Sixto E. Sánchez, and Michelle A. Williams. "Psychometric Properties of the Pittsburgh Sleep Quality Index (PSQI) in a Cohort of Peruvian Pregnant Women." J Clin Sleep Med 2015.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.