ebrary, Inc, White, W. B., & Culver, D. C. (2012). Encyclopedia of caves (2nd ed.). Elsevier.
Chicago-čujuhus (17. p.)ebrary, Inc, William B. White, juo David C. Culver. Encyclopedia of Caves. 2nd ed. Waltham, Mass.: Elsevier, 2012.
MLA-čujuhus (9. p.)ebrary, Inc, et al. Encyclopedia of Caves. 2nd ed. Elsevier, 2012.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.