APA (7th ed.) Citation

Geological Survey (U.S.) & ProQuest (Firm). (1906). The geography and geology of Alaska. A summary of existing knowledge. [publisher not identified].

Chicago Style (17th ed.) Citation

Geological Survey (U.S.) and ProQuest (Firm). The Geography and Geology of Alaska. A Summary of Existing Knowledge. Washington: [publisher not identified], 1906.

MLA (9th ed.) Citation

Geological Survey (U.S.) and ProQuest (Firm). The Geography and Geology of Alaska. A Summary of Existing Knowledge. [publisher not identified], 1906.

Warning: These citations may not always be 100% accurate.