Campbell, N. A. (1987). Biology (2nd. ed.). The Benjamin/Cummings Publishing.
Chicago-čujuhus (17. p.)Campbell, Neil A. Biology. 2nd. ed. California: The Benjamin/Cummings Publishing, 1987.
MLA-čujuhus (9. p.)Campbell, Neil A. Biology. 2nd. ed. The Benjamin/Cummings Publishing, 1987.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.