Dyfyniad APA
HUMPHREYS, K., & ET AL. (1996). TWO PATHWAYS OUT OF DRINKING PROBLEMS WITHOUT PROFESSIONAL TREATMENT.
Dyfyniad Arddull Chicago
HUMPHREYS, K., and ET AL. TWO PATHWAYS OUT OF DRINKING PROBLEMS WITHOUT PROFESSIONAL TREATMENT. 1996.
Dyfyniad MLA
HUMPHREYS, K., and ET AL. TWO PATHWAYS OUT OF DRINKING PROBLEMS WITHOUT PROFESSIONAL TREATMENT. 1996.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.