Schaber, Gerald G.; McCauley, John F. Geologic Map of the Tolstoj (H-8) Quadrangle of Mercury(PDF). U.S. Geological Survey. 1980 [2007-11-12]. USGS Miscellaneous Investigations Series Map I–1199, as part of the Atlas of Mercury, 1:5,000,000 Geologic Series. (原始内容(PDF)存档于2011-09-27).
web.archive.org
Schaber, Gerald G.; McCauley, John F. Geologic Map of the Tolstoj (H-8) Quadrangle of Mercury(PDF). U.S. Geological Survey. 1980 [2007-11-12]. USGS Miscellaneous Investigations Series Map I–1199, as part of the Atlas of Mercury, 1:5,000,000 Geologic Series. (原始内容(PDF)存档于2011-09-27).