APA (7th ed.) Citation

Wagner, F. H. (1918). Coal gas residuals (2nd ed.). McGraw-Hill.

Chicago Style (17th ed.) Citation

Wagner, Frederick Henry. Coal Gas Residuals. 2nd ed. New York: McGraw-Hill, 1918.

MLA (8th ed.) Citation

Wagner, Frederick Henry. Coal Gas Residuals. 2nd ed. McGraw-Hill, 1918.