Curtis, H., & Barnes, N. S. (1994). Invitation to Biology (5th.ed.). Worth.
Chicago-čujuhus (17. p.)Curtis, Helena, juo N. Sue Barnes. Invitation to Biology. 5th.ed. New York: Worth, 1994.
MLA-čujuhus (9. p.)Curtis, Helena, juo N. Sue Barnes. Invitation to Biology. 5th.ed. Worth, 1994.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.