APA (7th ed.) Citation

Assel, R. A. (1972). Great Lakes ice cover, winter 1971-74. U.S. Dept. of Commerce, National Oceanic and Atmospheric Administration, National Ocean Survey, Lake Survey Center.

Chicago Style (17th ed.) Citation

Assel, Raymond A. Great Lakes Ice Cover, Winter 1971-74. Detroit, Mich.: U.S. Dept. of Commerce, National Oceanic and Atmospheric Administration, National Ocean Survey, Lake Survey Center, 1972.

MLA (9th ed.) Citation

Assel, Raymond A. Great Lakes Ice Cover, Winter 1971-74. U.S. Dept. of Commerce, National Oceanic and Atmospheric Administration, National Ocean Survey, Lake Survey Center, 1972.