Pugh, A. L. (1998). Altitude of the top of the Sparta Sand and Memphis Sand in three areas of Arkansas. U.S. Geological Survey.
Chicago Style (17th ed.) CitationPugh, Aaron L. Altitude of the Top of the Sparta Sand and Memphis Sand in Three Areas of Arkansas. Little Rock, Arkansas: U.S. Geological Survey, 1998.
MLA (9th ed.) CitationPugh, Aaron L. Altitude of the Top of the Sparta Sand and Memphis Sand in Three Areas of Arkansas. U.S. Geological Survey, 1998.
Warning: These citations may not always be 100% accurate.