एपीए उद्धरण

Ofte, H. K., Tronvik, E., & Alstadhaug, K. B. (2016). Lack of association between cluster headache and PER3 clock gene polymorphism. J Headache Pain.

शिकागो स्टाइल उद्धरण

Ofte, Hilde K., Erling Tronvik, और Karl B. Alstadhaug. "Lack of Association between Cluster Headache and PER3 Clock Gene Polymorphism." J Headache Pain 2016.

एमएलए उद्धरण

Ofte, Hilde K., Erling Tronvik, और Karl B. Alstadhaug. "Lack of Association between Cluster Headache and PER3 Clock Gene Polymorphism." J Headache Pain 2016.