Chappelle, C. C. (1916). Increasing car operation economies (Limited ed.). Railway Improvement Co..
Lua i Stíl Chicago (17ú heag.)Chappelle, C. C. Increasing Car Operation Economies. Limited ed. New York: Railway Improvement Co., 1916.
Lua MLA (8ú heag.)Chappelle, C. C. Increasing Car Operation Economies. Limited ed. Railway Improvement Co., 1916.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.