APA (7th ed.) Citation

Allen, C. F. (2015). Railroard curves and earthwork.

Chicago Style (17th ed.) Citation

Allen, Calvin Frank. Railroard Curves and Earthwork. 2015.

MLA (9th ed.) Citation

Allen, Calvin Frank. Railroard Curves and Earthwork. 2015.

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