Dyck, E. V., & Meheus, A. P. (1999). Laboratory diagnosis of sexually transmitted diseases. World Health Organisation.
Dyfyniad Arddull ChicagoDyck, E. Van, and A.Z. Piot Meheus. Laboratory Diagnosis of Sexually Transmitted Diseases. Geneva: World Health Organisation, 1999.
Dyfyniad MLADyck, E. Van, and A.Z. Piot Meheus. Laboratory Diagnosis of Sexually Transmitted Diseases. World Health Organisation, 1999.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.