Cita APA (7a ed.)

Loeser, J. D., & Melzack, R. (1999). Pain, an overview. [s.n.].

Cita Chicago Style (17a ed.)

Loeser, John D., y Ronald Melzack. Pain, an Overview. [S.l.]: [s.n.], 1999.

Cita MLA (9a ed.)

Loeser, John D., y Ronald Melzack. Pain, an Overview. [s.n.], 1999.