Gebhart. (2013). Encyclopedia of Pain (2.). Springer Berlin Heidelberg.
Cita Chicago (17th ed.)Gebhart. Encyclopedia of Pain. 2. Springer Berlin Heidelberg, 2013.
Cita MLA (8th ed.)Gebhart. Encyclopedia of Pain. 2. Springer Berlin Heidelberg, 2013.
Atenció: Aquestes cites poden no estar 100% correctes.