APA (7th ed.) Citation

American Dredging Company. (1967). Four times Panama: A century of dredging the American way / 1867-1967. American Dredging Co..

Chicago Style (17th ed.) Citation

American Dredging Company. Four Times Panama: A Century of Dredging the American Way / 1867-1967. [Philadelphia?]: American Dredging Co., 1967.

MLA (9th ed.) Citation

American Dredging Company. Four Times Panama: A Century of Dredging the American Way / 1867-1967. American Dredging Co., 1967.