APA (7th ed.) Citation

Ringwalt, J. L. (1966). Development of transportation systems in the United States / by J.L. Ringwalt. Johnson Reprint.

Chicago Style (17th ed.) Citation

Ringwalt, J. L. Development of Transportation Systems in the United States / by J.L. Ringwalt. Johnson Reprint, 1966.

MLA (9th ed.) Citation

Ringwalt, J. L. Development of Transportation Systems in the United States / by J.L. Ringwalt. Johnson Reprint, 1966.

Warning: These citations may not always be 100% accurate.