Gray, T. (1823). Observations on a general iron rail-way: (with plates and map illustrative of the plan) (4th ed., considerably improved.). Baldwin, Cradock, and Joy.
Chicago-Zitierstil (17. Ausg.)Gray, Thomas. Observations on a General Iron Rail-way: (with Plates and Map Illustrative of the Plan). 4th ed., considerably improved. London: Baldwin, Cradock, and Joy, 1823.
MLA-Zitierstil (9. Ausg.)Gray, Thomas. Observations on a General Iron Rail-way: (with Plates and Map Illustrative of the Plan). 4th ed., considerably improved. Baldwin, Cradock, and Joy, 1823.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.