Dyfyniad APA

Andrews, R., & Lynch, M. (2004). Heliox in the treatment of chronic obstructive pulmonary disease. BMJ Group.

Dyfyniad Arddull Chicago

Andrews, R., and M. Lynch. Heliox in the Treatment of Chronic Obstructive Pulmonary Disease. BMJ Group, 2004.

Dyfyniad MLA

Andrews, R., and M. Lynch. Heliox in the Treatment of Chronic Obstructive Pulmonary Disease. BMJ Group, 2004.

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