Dyfyniad APA
Sivakumar, R., & Fegan, S. C. (2005). Introduction to environmental science and engineering (4th ed.). Vijay Nicole Imprints.
Dyfyniad Arddull Chicago
Sivakumar, Raman, and Sophia Chung Fegan. Introduction to Environmental Science and Engineering. 4th ed. Chennai: Vijay Nicole Imprints, 2005.
Dyfyniad MLA
Sivakumar, Raman, and Sophia Chung Fegan. Introduction to Environmental Science and Engineering. 4th ed. Vijay Nicole Imprints, 2005.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.