United States. Beach Erosion Board. (1940). Technical memorandum - Beach Erosion Board. U.S. Beach Erosion Board.
Cita Chicago (17th ed.)United States. Beach Erosion Board. Technical Memorandum - Beach Erosion Board. [Washington,: U.S. Beach Erosion Board, 1940.
Cita MLA (8th ed.)United States. Beach Erosion Board. Technical Memorandum - Beach Erosion Board. U.S. Beach Erosion Board, 1940.
Atenció: Aquestes cites poden no estar 100% correctes.