Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (8a ed.)

Diehl, Roberta L., et al. Encyclopedia of North American Railroads. Indiana University Press, 2007.