APA (7th ed.) Citation

Kudlich, R. H. (1931). Bureau of Mines coal-sampling truck. [publisher not identified].

Chicago Style (17th ed.) Citation

Kudlich, Rudolf H. Bureau of Mines Coal-sampling Truck. Washington, D.C.: [publisher not identified], 1931.

MLA (9th ed.) Citation

Kudlich, Rudolf H. Bureau of Mines Coal-sampling Truck. [publisher not identified], 1931.