APA   Click to copy
Waqas, A., Khan, S., muhammad Sharif, W., Ali, A., & others. (2014). Association of academic stressors with sleep disturbances in medical students: is psychological stress a mediator? PeerJ PrePrints.

Chicago/Turabian   Click to copy
Waqas, Ahmed, Spogmai Khan, Waqar muhammad Sharif, Asad Ali, and others. Association of Academic Stressors with Sleep Disturbances in Medical Students: Is Psychological Stress a Mediator? PeerJ PrePrints, 2014.

MLA   Click to copy
Waqas, Ahmed, et al. Association of Academic Stressors with Sleep Disturbances in Medical Students: Is Psychological Stress a Mediator? PeerJ PrePrints, 2014.

@techreport{waqas2014a,
  title = {Association of academic stressors with sleep disturbances in medical students: is psychological stress a mediator?},
  year = {2014},
  institution = {PeerJ PrePrints},
  author = {Waqas, Ahmed and Khan, Spogmai and muhammad Sharif, Waqar and Ali, Asad and others}
}