Gaya APA

Ryan, L., Norris, R. (2020). Chemistry for Cambridge International AS & A Level (Coursebook) : DIPA 2026 (Third edition). United Kingdom: Cambridge University Press.

Gaya MLA

Ryan, Lawrie., Norris, Roger. "Chemistry for Cambridge International AS & A Level (Coursebook) : DIPA 2026". Third edition United Kingdom: Cambridge University Press, 2020. Art Original.