Brenda Walpole; Ashby Merson-Davies; Leighton Dann; Peter Hoeben; Mark Headlee. (2014). Biology for the IB Diploma Coursebook (2.). Cambridge University Press.
Chicago-čujuhus (17. p.)Brenda Walpole; Ashby Merson-Davies; Leighton Dann; Peter Hoeben; Mark Headlee. Biology for the IB Diploma Coursebook. 2. Cambridge University Press, 2014.
MLA-čujuhus (9. p.)Brenda Walpole; Ashby Merson-Davies; Leighton Dann; Peter Hoeben; Mark Headlee. Biology for the IB Diploma Coursebook. 2. Cambridge University Press, 2014.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.