Craig Roberts. (2019). Psychology for Cambridge International AS and A Level: For the 9698 syllabus. Oxford University Press.
Lua i Stíl Chicago (17ú heag.)Craig Roberts. Psychology for Cambridge International AS and A Level: For the 9698 Syllabus. Oxford University Press, 2019.
Lua MLA (9ú heag.)Craig Roberts. Psychology for Cambridge International AS and A Level: For the 9698 Syllabus. Oxford University Press, 2019.
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