Dyfyniad APA

Berg,,Gerald, & Berg , G.. (1978). Indicators of viruses in water and food. Ann arbor science.

Dyfyniad Arddull Chicago

Berg,,Gerald, and Gerald Berg. Indicators of Viruses in Water and Food. Michigan: Ann arbor science, 1978.

Dyfyniad MLA

Berg,,Gerald, and Gerald Berg. Indicators of Viruses in Water and Food. Ann arbor science, 1978.

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