APA (7th ed.) Citation

Geological Survey (U.S.) & ProQuest (Firm). (1908). The purchase of coal under government and commercial specifications on the basis of its heating value. With analyses of coal delivered under government contracts. [publisher not identified].

Chicago Style (17th ed.) Citation

Geological Survey (U.S.) and ProQuest (Firm). The Purchase of Coal Under Government and Commercial Specifications on the Basis of Its Heating Value. With Analyses of Coal Delivered Under Government Contracts. Washington: [publisher not identified], 1908.

MLA (9th ed.) Citation

Geological Survey (U.S.) and ProQuest (Firm). The Purchase of Coal Under Government and Commercial Specifications on the Basis of Its Heating Value. With Analyses of Coal Delivered Under Government Contracts. [publisher not identified], 1908.