Laws of the United States relating to the improvement of rivers and harbors.
MLA
United States. Laws of the United States relating to the improvement of rivers and harbors. Washington : [publisher not identified], 1913.
APA
United States. (1913). Laws of the United States relating to the improvement of rivers and harbors. Washington : [publisher not identified].
Chicago
United States. Laws of the United States relating to the improvement of rivers and harbors. Washington : [publisher not identified], 1913.