APA (7th ed.) Citation

Schenck, H. H. (1975). The world's submarine telephone cable systems. U.S. Dept. of Commerce, Office of Telecommunications.

Chicago Style (17th ed.) Citation

Schenck, H. H. The World's Submarine Telephone Cable Systems. [Washington]: U.S. Dept. of Commerce, Office of Telecommunications, 1975.

MLA (8th ed.) Citation

Schenck, H. H. The World's Submarine Telephone Cable Systems. U.S. Dept. of Commerce, Office of Telecommunications, 1975.