APA (7th ed.) Citation

Nestadt, G., Di, C. Z., Riddle, M. A., Grados, M. A., Greenberg, B. D., Fyer, A. J., . . . Roche, K. B. (2009). Obsessive—compulsive disorder: Subclassification based on co-morbidity. Psychological Medicine, 39(9), 1491. https://doi.org/10.1017/S0033291708004753

Chicago Style (17th ed.) Citation

Nestadt, G., et al. "Obsessive—compulsive Disorder: Subclassification Based on Co-morbidity." Psychological Medicine 39, no. 9 (2009): 1491. https://doi.org/10.1017/S0033291708004753.

MLA (9th ed.) Citation

Nestadt, G., et al. "Obsessive—compulsive Disorder: Subclassification Based on Co-morbidity." Psychological Medicine, vol. 39, no. 9, 2009, p. 1491, https://doi.org/10.1017/S0033291708004753.