APA (7th ed.) Citation

Girschik, J., Heyworth, J., & Fritschi, L. (2012). Reliability of a sleep quality questionnaire for use in epidemiologic studies. British Medical Journal Group.

Chicago Style (17th ed.) Citation

Girschik, J., J. Heyworth, and Lin Fritschi. Reliability of a Sleep Quality Questionnaire for Use in Epidemiologic Studies. British Medical Journal Group, 2012.

MLA (9th ed.) Citation

Girschik, J., et al. Reliability of a Sleep Quality Questionnaire for Use in Epidemiologic Studies. British Medical Journal Group, 2012.