APA (7th ed.) Citation

Ahrens, J. P. (1987). Characteristics of reef breakwaters. [U.S. Army Engineer Waterways Experiment Station] ; [available from National Technical Information Service].

Chicago Style (17th ed.) Citation

Ahrens, John P. Characteristics of Reef Breakwaters. [Vicksburg, Miss.] : [Springfield, Va.]: [U.S. Army Engineer Waterways Experiment Station] ; [available from National Technical Information Service], 1987.

MLA (9th ed.) Citation

Ahrens, John P. Characteristics of Reef Breakwaters. [U.S. Army Engineer Waterways Experiment Station] ; [available from National Technical Information Service], 1987.