(1984). Pennsylvania: Index to topographic and other map coverage. Reston, Va.: The Survey.
Chicago Style CitationPennsylvania: Index to Topographic and Other Map Coverage. Reston, Va.: The Survey, 1984.
MLA CitationPennsylvania: Index to Topographic and Other Map Coverage. Reston, Va.: The Survey, 1984.
Warning: These citations may not always be 100% accurate.