APA (7th ed.) Citation

United States. National Geospatial-Intelligence Agency. (2010). Sailing directions (enroute): English Channel (16 th ed.). National Geospatial-Intelligence Agency.

Chicago Style (17th ed.) Citation

United States. National Geospatial-Intelligence Agency. Sailing Directions (enroute): English Channel. 16 th ed. [Bethesda, Md.]: National Geospatial-Intelligence Agency, 2010.

MLA (9th ed.) Citation

United States. National Geospatial-Intelligence Agency. Sailing Directions (enroute): English Channel. 16 th ed. National Geospatial-Intelligence Agency, 2010.