Cita APA

Melzack, R. (1973). Puzzle of pain. Penguin Books.

Citación estilo Chicago

Melzack, Ronald. Puzzle of Pain. Armondworth: Penguin Books, 1973.

Cita MLA

Melzack, Ronald. Puzzle of Pain. Penguin Books, 1973.

Warning: These citations may not always be 100% accurate.