Geological Survey (U.S.) & ProQuest (Firm). (1912). Bulletin 498. Headwater regions of Gulkana and Susitna Rivers, Alaska, with accounts of the Valdez Creek and Chistochina Placer Districts. [publisher not identified].
Chicago Style (17th ed.) CitationGeological Survey (U.S.) and ProQuest (Firm). Bulletin 498. Headwater Regions of Gulkana and Susitna Rivers, Alaska, with Accounts of the Valdez Creek and Chistochina Placer Districts. Washington: [publisher not identified], 1912.
MLA (9th ed.) CitationGeological Survey (U.S.) and ProQuest (Firm). Bulletin 498. Headwater Regions of Gulkana and Susitna Rivers, Alaska, with Accounts of the Valdez Creek and Chistochina Placer Districts. [publisher not identified], 1912.
Warning: These citations may not always be 100% accurate.