APA (7th ed.) Citation

Greenfeld, S. H. (1956). Report on the evaluation of twenty-one coating-grade roofing asphalts. U.S. Dept. of Commerce, National Institute of Standards and Technology.

Chicago Style (17th ed.) Citation

Greenfeld, Sidney H. Report on the Evaluation of Twenty-one Coating-grade Roofing Asphalts. Gaithersburg, MD: U.S. Dept. of Commerce, National Institute of Standards and Technology, 1956.

MLA (9th ed.) Citation

Greenfeld, Sidney H. Report on the Evaluation of Twenty-one Coating-grade Roofing Asphalts. U.S. Dept. of Commerce, National Institute of Standards and Technology, 1956.