Bryan, T. S., & Pratt, D. (2008). The geysers of Yellowstone (Fourth edition.). University Press of Colorado.
Chicago Style (17th ed.) ZitazioaBryan, T. Scott, eta Daniel Pratt. The Geysers of Yellowstone. Fourth edition. Boulder, Colorado: University Press of Colorado, 2008.
MLA (9th ed.) ZitazioaBryan, T. Scott, eta Daniel Pratt. The Geysers of Yellowstone. Fourth edition. University Press of Colorado, 2008.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.