Cita APA (7a ed.)

Middleton, W. D., Smerk, G. M., & Diehl, R. L. (2007). Encyclopedia of North American railroads. Indiana University Press.

Cita Chicago Style (17a ed.)

Middleton, William D., George M. Smerk, y Roberta L. Diehl. Encyclopedia of North American Railroads. Bloomington, Indiana: Indiana University Press, 2007.

Cita MLA (8a ed.)

Middleton, William D., et al. Encyclopedia of North American Railroads. Indiana University Press, 2007.