Brenda Walpole; Ashby Merson-Davies; Leighton Dann; Peter Hoeben; Mark Headlee. (2014). Biology for the IB Diploma Coursebook (2.). Cambridge University Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रBrenda Walpole; Ashby Merson-Davies; Leighton Dann; Peter Hoeben; Mark Headlee. Biology for the IB Diploma Coursebook. 2. Cambridge University Press, 2014.
एमएलए (9वां संस्करण) प्रशस्ति पत्रBrenda Walpole; Ashby Merson-Davies; Leighton Dann; Peter Hoeben; Mark Headlee. Biology for the IB Diploma Coursebook. 2. Cambridge University Press, 2014.
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