Dyfyniad APA
(1992). SMOKING IN PUBLIC PLACES AND IN THE WORKPLACE: A STRONG MAJORITY OF EUROPEANS IN FAVOUR OF RESTRICTIONS.
Dyfyniad Arddull Chicago
SMOKING IN PUBLIC PLACES AND IN THE WORKPLACE: A STRONG MAJORITY OF EUROPEANS IN FAVOUR OF RESTRICTIONS. 1992.
Dyfyniad MLA
SMOKING IN PUBLIC PLACES AND IN THE WORKPLACE: A STRONG MAJORITY OF EUROPEANS IN FAVOUR OF RESTRICTIONS. 1992.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.