Dyfyniad APA

Purcell, L., Kissick, J., & Rizos, J. (2013). Concussion. Canadian Medical Association.

Dyfyniad Arddull Chicago

Purcell, Laura, Jamie Kissick, and John Rizos. Concussion. Canadian Medical Association, 2013.

Dyfyniad MLA

Purcell, Laura, Jamie Kissick, and John Rizos. Concussion. Canadian Medical Association, 2013.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.