Dyfyniad APA
Wilbraham, A. C. [. (2000). Chemistrey: Addison -Wesley (5th ed.). Prentice Hall Pearson Education.
Dyfyniad Arddull Chicago
Wilbraham, Antony C [et-al]. Chemistrey: Addison -Wesley. 5th ed. Upper Saddle River,New Jersey: Prentice Hall Pearson Education, 2000.
Dyfyniad MLA
Wilbraham, Antony C [et-al]. Chemistrey: Addison -Wesley. 5th ed. Prentice Hall Pearson Education, 2000.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.