Cita APA (7a ed.)

Keefer, T. C., & Nelles, H. V. (1972). Philosophy of railroads and other essays: Railroad promotion and manipulation in the 19th century. University of Toronto Press.

Cita Chicago Style (17a ed.)

Keefer, Thomas C., y H. V. Nelles. Philosophy of Railroads and Other Essays: Railroad Promotion and Manipulation in the 19th Century. [Buffalo]: University of Toronto Press, 1972.

Cita MLA (8a ed.)

Keefer, Thomas C., y H. V. Nelles. Philosophy of Railroads and Other Essays: Railroad Promotion and Manipulation in the 19th Century. University of Toronto Press, 1972.