Cita APA (7th ed.)
Grahek, N. (2007). Feeling pain and being in pain (2nd ed.). MIT.
Cita Chicago (17th ed.)
Grahek, Nikola. Feeling Pain and Being in Pain. 2nd ed. Cambridge, MA ; London: MIT, 2007.
Cita MLA (9th ed.)
Grahek, Nikola. Feeling Pain and Being in Pain. 2nd ed. MIT, 2007.
Atenció: Aquestes cites poden no estar 100% correctes.