APA Citatie

Kripke, D. F., Rex, K. M., Ancoli-Israel, S., Nievergelt, C. M., Klimecki, W., & Kelsoe, J. R. (2008). Delayed sleep phase cases and controls. BioMed Central.

Chicago Style citaat

Kripke, Daniel F., Katharine M. Rex, Sonia Ancoli-Israel, Caroline M. Nievergelt, Walt Klimecki, en John R. Kelsoe. Delayed Sleep Phase Cases and Controls. BioMed Central, 2008.

MLA citatie

Kripke, Daniel F., et al. Delayed Sleep Phase Cases and Controls. BioMed Central, 2008.