Dyfyniad APA
De, D., & De, D. (2010). Fundamental of environment and ecology. S. Chand.
Dyfyniad Arddull Chicago
De, Debapriya, and Debasish De. Fundamental of Environment and Ecology. New Delhi: S. Chand, 2010.
Dyfyniad MLA
De, Debapriya, and Debasish De. Fundamental of Environment and Ecology. S. Chand, 2010.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.