Dokumentuaren aipamena

APA (7th ed.) Zitazioa
Lesley J. Peter. (1888). Atlas to accompany part 4, Annual Report of the Geological Survey of Pennsylvania for 1886. William A. Ingham.
Chicago Style (17th ed.) Zitazioa
Lesley J. Peter. Atlas to Accompany Part 4, Annual Report of the Geological Survey of Pennsylvania for 1886. William A. Ingham, 1888.
MLA (9th ed.) Zitazioa
Lesley J. Peter. Atlas to Accompany Part 4, Annual Report of the Geological Survey of Pennsylvania for 1886. William A. Ingham, 1888.
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