Dyfyniad APA
De, A. (2010). Environmental chemistry (7th ed.). New Age international.
Dyfyniad Arddull Chicago
De, A.K. Environmental Chemistry. 7th ed. New Delhi: New Age international, 2010.
Dyfyniad MLA
De, A.K. Environmental Chemistry. 7th ed. New Age international, 2010.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.