Dyfyniad APA

Hassell, C. A. (2007). Chemical investigations for changing times. London: Prentice Hall.

Dyfyniad Arddull Chicago

Hassell, C. Alton. Chemical Investigations for Changing Times. London: Prentice Hall, 2007.

Dyfyniad MLA

Hassell, C. Alton. Chemical Investigations for Changing Times. London: Prentice Hall, 2007.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.