Cita APA (7a ed.)

Middleton, W. D., & Middleton, W. D. (2009). Frank Julian Sprague: Electrical Inventor and Engineer. Indiana University Press.

Cita Chicago Style (17a ed.)

Middleton, William D., y William D. Middleton. Frank Julian Sprague: Electrical Inventor and Engineer. Bloomington: Indiana University Press, 2009.

Cita MLA (8a ed.)

Middleton, William D., y William D. Middleton. Frank Julian Sprague: Electrical Inventor and Engineer. Indiana University Press, 2009.