Dyfyniad APA

Townsend, C. R. (2000). Essentials of ecology. Malden, Mass: Blackwell Science.

Dyfyniad Arddull Chicago

Townsend, Colin R. Essentials of Ecology. Malden, Mass: Blackwell Science, 2000.

Dyfyniad MLA

Townsend, Colin R. Essentials of Ecology. Malden, Mass: Blackwell Science, 2000.

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