Dyfyniad APA

Rees, A. R., & Purcell, H. (1982). Disease and the environment. John Wiley and Sons.

Dyfyniad Arddull Chicago

Rees, A. R., and H.J Purcell. Disease and the Environment. John Wiley and Sons, 1982.

Dyfyniad MLA

Rees, A. R., and H.J Purcell. Disease and the Environment. John Wiley and Sons, 1982.

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