APA (7th ed.) Citation

Köpp, W., Blum, W. F., von Prittwitz, S., Ziegler, A., Lübbert, H., Emons, G., . . . Hebebrand, J. (1997). Low leptin levels predict amenorrhea in underweight and eating disordered females. Molecular psychiatry, 2(4), . https://doi.org/10.1038/sj.mp.4000287

Chicago Style (17th ed.) Citation

Köpp, Werner, et al. "Low Leptin Levels Predict Amenorrhea in Underweight and Eating Disordered Females." Molecular Psychiatry 2, no. 4 (1997). https://doi.org/10.1038/sj.mp.4000287.

MLA (9th ed.) Citation

Köpp, Werner, et al. "Low Leptin Levels Predict Amenorrhea in Underweight and Eating Disordered Females." Molecular Psychiatry, vol. 2, no. 4, 1997, https://doi.org/10.1038/sj.mp.4000287.