APA (7th ed.) Citation

Norton, W. F. (1920). Combination gas and electric lighting for a high school. American Gas Engineering Journal., 112, 219.

Chicago Style (17th ed.) Citation

Norton, W. F. "Combination Gas and Electric Lighting for a High School." American Gas Engineering Journal. 112 (1920): 219.

MLA (9th ed.) Citation

Norton, W. F. "Combination Gas and Electric Lighting for a High School." American Gas Engineering Journal., vol. 112, 1920, p. 219.