Gaya APA

Firth, M., dkk, C, S. (2013). Cambridge Academic English: An Integrated Skills Course for EAP Teacher's Book Advanced . Inggris: Cambridge.

Gaya MLA

Firth, Matt., dkk, Chris, Sowton,. "Cambridge Academic English: An Integrated Skills Course for EAP Teacher's Book Advanced". Inggris: Cambridge, 2013. Text.