Gaya APA

Langfield, S., Duddell, D. (2019). Computer Science for Cambridge International AS & A Level : Coursebook (Second Edition). United Kingdom: Cambridge University Press.

Gaya MLA

Langfield, Sylvia., Duddell, Dave. "Computer Science for Cambridge International AS & A Level : Coursebook". Second Edition United Kingdom: Cambridge University Press, 2019. Text.