APA aipamena

Hagen, K., Stovner, L. J., Nilsen, K. B., Kristoffersen, E. S., & Winsvold, B. S. (2019). The impact of C-reactive protein levels on headache frequency in the HUNT study 2006–2008. BMC Neurol.

Chicago Style aipamena

Hagen, Knut, Lars Jacob Stovner, Kristian Bernhard Nilsen, Espen Saxhaug Kristoffersen, and Bendik Slagsvold Winsvold. "The Impact of C-reactive Protein Levels On Headache Frequency in the HUNT Study 2006–2008." BMC Neurol 2019.

MLA aipamena

Hagen, Knut, et al. "The Impact of C-reactive Protein Levels On Headache Frequency in the HUNT Study 2006–2008." BMC Neurol 2019.