APA (7th ed.) Citation

Buysse, D., Kupfer, D., Berman, S., Monk, T., & Reynolds, C. (1989). The Pittsburgh Sleep Quality Index: A New Instrument for Psychiatric Practice and Research. Psychiatry research, 28, 193-213. doi:10.1016/0165-1781(89)90047-4

Chicago Style (17th ed.) Citation

Buysse, D., D. Kupfer, S. Berman, Thelonious Monk, and C. Reynolds. "The Pittsburgh Sleep Quality Index: A New Instrument for Psychiatric Practice and Research." Psychiatry Research 28 (1989): 193-213. https://doi.org/10.1016/0165-1781(89)90047-4.

MLA (9th ed.) Citation

Buysse, D., et al. "The Pittsburgh Sleep Quality Index: A New Instrument for Psychiatric Practice and Research." Psychiatry Research, vol. 28, 1989, pp. 193-213, https://doi.org/10.1016/0165-1781(89)90047-4.