APA (7th ed.) Citation

Geological Survey (U.S.) & ProQuest (Firm). (1916). Bulletin 645. Bibliography of North American geology for 1915, with subject index. [publisher not identified].

Chicago Style (17th ed.) Citation

Geological Survey (U.S.) and ProQuest (Firm). Bulletin 645. Bibliography of North American Geology for 1915, with Subject Index. Washington: [publisher not identified], 1916.

MLA (9th ed.) Citation

Geological Survey (U.S.) and ProQuest (Firm). Bulletin 645. Bibliography of North American Geology for 1915, with Subject Index. [publisher not identified], 1916.

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