APA (7th ed.) Citation

Allen, C. F. (1972). Railroad curves and earthwork (7th ed.). National Book Store.

Chicago Style (17th ed.) Citation

Allen, Calvin Francis. Railroad Curves and Earthwork. 7th ed. Manila: National Book Store, 1972.

MLA (9th ed.) Citation

Allen, Calvin Francis. Railroad Curves and Earthwork. 7th ed. National Book Store, 1972.

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