Craig Roberts. (2019). Psychology for Cambridge International AS and A Level: For the 9698 syllabus. Oxford University Press.
Chicago-viite (17. p.)Craig Roberts. Psychology for Cambridge International AS and A Level: For the 9698 Syllabus. Oxford University Press, 2019.
MLA-viite (9. p.)Craig Roberts. Psychology for Cambridge International AS and A Level: For the 9698 Syllabus. Oxford University Press, 2019.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.