Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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