Dyfyniad APA

Ryan, L., & Norris, R. (2020). Chemistry For Cambridge International AS & A Level Coursebook (3rd.). Cambridge University Press.

Dyfyniad Arddull Chicago

Ryan, Lawrie, and Roger Norris. Chemistry For Cambridge International AS & A Level Coursebook. 3rd. London: Cambridge University Press, 2020.

Dyfyniad MLA

Ryan, Lawrie, and Roger Norris. Chemistry For Cambridge International AS & A Level Coursebook. 3rd. Cambridge University Press, 2020.

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