Ron Pickering. (2014). Complete Biology for Cambridge IGCSERG with CD-ROM (Second Edition) (2.). Oxford University Press.
Chicago Style (17. basım) AtıfRon Pickering. Complete Biology for Cambridge IGCSERG with CD-ROM (Second Edition). 2. Oxford University Press, 2014.
MLA (9th ed.) AtıfRon Pickering. Complete Biology for Cambridge IGCSERG with CD-ROM (Second Edition). 2. Oxford University Press, 2014.
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