APA-viite

O’Donnell, D., Silva, E. J., Munch, M., Ronda, J. M., Wang, W., & Duffy, J. F. (2009). Comparison of Subjective and Objective Assessments of Sleep in Healthy Older Subjects Without Sleep Complaints.

Chicago-tyylinen lähdeviittaus

O’Donnell, Deirdre, Edward J. Silva, Mirjam Munch, Joseph M. Ronda, Wei Wang, ja Jeanne F. Duffy. Comparison of Subjective and Objective Assessments of Sleep in Healthy Older Subjects Without Sleep Complaints. 2009.

MLA-viite

O’Donnell, Deirdre, et al. Comparison of Subjective and Objective Assessments of Sleep in Healthy Older Subjects Without Sleep Complaints. 2009.

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