Alexey Popov. (2018). IB Psychology Study Guide: Oxford IB Diploma Programme (Study Guide.). Oxford University Press.
Chicago Style aipamenaAlexey Popov. IB Psychology Study Guide: Oxford IB Diploma Programme. Study Guide. Oxford University Press, 2018.
MLA aipamenaAlexey Popov. IB Psychology Study Guide: Oxford IB Diploma Programme. Study Guide. Oxford University Press, 2018.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.