Cita APA

Allen, F. F., & Allen, F. F. (1914). Railroad curves and earthwork (5. edition, rev.). New York, New York: McGraw-Hill.

Citación estilo Chicago

Allen, Frank F., y Frank F. Allen. Railroad Curves and Earthwork. 5. edition, rev. New York, New York: McGraw-Hill, 1914.

Cita MLA

Allen, Frank F., y Frank F. Allen. Railroad Curves and Earthwork. 5. edition, rev. New York, New York: McGraw-Hill, 1914.