Kiver, E. P., & Harris, D. V. (1999). Geology of U.S. parklands (5th ed.). J. Wiley.
Lua i Stíl Chicago (17ú heag.)Kiver, Eugene P., agus David V. Harris. Geology of U.S. Parklands. 5th ed. New York: J. Wiley, 1999.
Lua MLA (8ú heag.)Kiver, Eugene P., agus David V. Harris. Geology of U.S. Parklands. 5th ed. J. Wiley, 1999.
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