Dyfyniad APA

Porteous, A. (1979). Developments in environmental control and public health-1. Applied Science Publishers.

Dyfyniad Arddull Chicago

Porteous, Andrew. Developments in Environmental Control and Public Health-1. London: Applied Science Publishers, 1979.

Dyfyniad MLA

Porteous, Andrew. Developments in Environmental Control and Public Health-1. Applied Science Publishers, 1979.

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