Tidal current tables:
Atlantic coast of North America.

APA Citation

National Ocean Survey. (1971). Tidal current tables. [Rockville, Md.]: U.S. Dept. of Commerce, National Oceanic and Atmospheric Administration, National Ocean Survey.

MLA Citation

National Ocean Survey. Tidal Current Tables. [Rockville, Md.]: U.S. Dept. of Commerce, National Oceanic and Atmospheric Administration, National Ocean Survey, 1971.

Warning: These citations may not always be complete (especially for serials).