APA

Berber J. S., Rahfuse R. V., . (1968). Preparation of biodegradable synthetic detergents from low temperature lignite tar. [Washington, DC]: Bureau of Mines, U.S. Dep. of the Interior.

Chicago

Berber John S, Rahfuse Robert V, . 1968. Preparation of biodegradable synthetic detergents from low temperature lignite tar. [Washington, DC]: Bureau of Mines, U.S. Dep. of the Interior.

Harvard

Berber J. S., Rahfuse R. V., . (1968). Preparation of biodegradable synthetic detergents from low temperature lignite tar. [Washington, DC]: Bureau of Mines, U.S. Dep. of the Interior.

MLA

Berber John S, Rahfuse Robert V, . Preparation of biodegradable synthetic detergents from low temperature lignite tar. [Washington, DC]: Bureau of Mines, U.S. Dep. of the Interior. 1968.