LONG, P. (2016). Cambridge international AS and A Level IT: Coursebook. Cambridge University Press.
Chicago-viite (17. p.)LONG, Paul. Cambridge International AS and A Level IT: Coursebook. Cambridge University Press, 2016.
MLA-viite (9. p.)LONG, Paul. Cambridge International AS and A Level IT: Coursebook. Cambridge University Press, 2016.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.