Bourne, J. G. (1960). Nitrous oxide in dentistry; its danger and alternatives. Year Book Pub.
Dyfyniad Arddull ChicagoBourne, James Gerald. Nitrous Oxide in Dentistry; Its Danger and Alternatives. Chicago: Year Book Pub, 1960.
Dyfyniad MLABourne, James Gerald. Nitrous Oxide in Dentistry; Its Danger and Alternatives. Year Book Pub, 1960.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.