APA-referens (7:e uppl.)

Chappelle, C. C. (1916). Increasing car operation economies (Limited ed.). Railway Improvement Co..

Chicago-referens (17:e uppl.)

Chappelle, C. C. Increasing Car Operation Economies. Limited ed. New York: Railway Improvement Co., 1916.

MLA-referens (8:e uppl.)

Chappelle, C. C. Increasing Car Operation Economies. Limited ed. Railway Improvement Co., 1916.