Cita APA (7a ed.)

Johnson, E. R., & Huebner, G. G. (1923). Railroad traffic and rates. D. Appleton and Company.

Cita Chicago Style (17a ed.)

Johnson, Emory R., y Grover G. Huebner. Railroad Traffic and Rates. New York [etc.]: D. Appleton and Company, 1923.

Cita MLA (9a ed.)

Johnson, Emory R., y Grover G. Huebner. Railroad Traffic and Rates. D. Appleton and Company, 1923.