Dyfyniad APA

Cooper, J. I. (1995). Viruses and the environment (2nd ed.). Chapman & Hall.

Dyfyniad Arddull Chicago

Cooper, J. I. Viruses and the Environment. 2nd ed. London: Chapman & Hall, 1995.

Dyfyniad MLA

Cooper, J. I. Viruses and the Environment. 2nd ed. Chapman & Hall, 1995.

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