APA (7th ed.) Citation

United States. Bureau of Mines. (1937). Method of determining porosity, list of porosities of oil sands. [s.n.].

Chicago Style (17th ed.) Citation

United States. Bureau of Mines. Method of Determining Porosity, List of Porosities of Oil Sands. [Washington]: [s.n.], 1937.

MLA (9th ed.) Citation

United States. Bureau of Mines. Method of Determining Porosity, List of Porosities of Oil Sands. [s.n.], 1937.