APA (7th ed.) Citation

Hough, B. O. (1914). Ocean traffic and trade. Lasalle extension university.

Chicago Style (17th ed.) Citation

Hough, B. Olney. Ocean Traffic and Trade. Chicago: Lasalle extension university, 1914.

MLA (9th ed.) Citation

Hough, B. Olney. Ocean Traffic and Trade. Lasalle extension university, 1914.