Geological Survey (U.S.), National Science Foundation (U.S.), & United States Antarctic Research Program. (1993). Antarctica sketch map (Repr. 1993 with changes.). Geological Survey.
Chicago Style (17th ed.) CitationGeological Survey (U.S.), National Science Foundation (U.S.), and United States Antarctic Research Program. Antarctica Sketch Map. Repr. 1993 with changes. Reston, Va.: Geological Survey, 1993.
MLA (9th ed.) CitationGeological Survey (U.S.), et al. Antarctica Sketch Map. Repr. 1993 with changes. Geological Survey, 1993.
Warning: These citations may not always be 100% accurate.