Roberts, M. B. V. Biology: A functional approach (4th ed.).
Chicago-čujuhus (17. p.)Roberts, M. B. V. Biology: A Functional Approach. 4th ed.
MLA-čujuhus (9. p.)Roberts, M. B. V. Biology: A Functional Approach. 4th ed.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.