Dyfyniad APA
Gopinath, R., & Balasubramanya, N. (2018). Environmental science and engineering. Cengage.
Dyfyniad Arddull Chicago
Gopinath, Rajesh, and N. Balasubramanya. Environmental Science and Engineering. New Delhi: Cengage, 2018.
Dyfyniad MLA
Gopinath, Rajesh, and N. Balasubramanya. Environmental Science and Engineering. Cengage, 2018.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.