APA (7th ed.) Citation

Norton, H. S. (1971). Modern transportation economics (2d ed.). Merrill.

Chicago Style (17th ed.) Citation

Norton, Hugh Stanton. Modern Transportation Economics. 2d ed. Columbus, Ohio: Merrill, 1971.

MLA (9th ed.) Citation

Norton, Hugh Stanton. Modern Transportation Economics. 2d ed. Merrill, 1971.