APA (7th ed.) Citation

Porter, C. B., & Yancey, H. F. (1932). Pneumatic tabling of coal: Effect of specific gravity, size, and shape. U.S. Government Printing Office.

Chicago Style (17th ed.) Citation

Porter, Cabell Breckinridge, and H. F. Yancey. Pneumatic Tabling of Coal: Effect of Specific Gravity, Size, and Shape. [Washington?]: U.S. Government Printing Office, 1932.

MLA (9th ed.) Citation

Porter, Cabell Breckinridge, and H. F. Yancey. Pneumatic Tabling of Coal: Effect of Specific Gravity, Size, and Shape. U.S. Government Printing Office, 1932.