Campbell, N. A. (2011). Biology (11th ed.). Pearson Education.
Chicago-čujuhus (17. p.)Campbell, Neil A. Biology. 11th ed. Boston: Pearson Education, 2011.
MLA-čujuhus (9. p.)Campbell, Neil A. Biology. 11th ed. Pearson Education, 2011.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.