APA (7th ed.) Citation

United States. National Geospatial-Intelligence Agency. Maritime Safety Information Division. (2004). Sailing directions (enroute): North Sea (9th ed.). Maritime Division, National Geospatial-Intelligence Agency.

Chicago Style (17th ed.) Citation

United States. National Geospatial-Intelligence Agency. Maritime Safety Information Division. Sailing Directions (enroute): North Sea. 9th ed. Bethesda, MD: Maritime Division, National Geospatial-Intelligence Agency, 2004.

MLA (9th ed.) Citation

United States. National Geospatial-Intelligence Agency. Maritime Safety Information Division. Sailing Directions (enroute): North Sea. 9th ed. Maritime Division, National Geospatial-Intelligence Agency, 2004.