APA Style

Admiralty : The Nautical Almanac Her Majesty's Nautical Almanac Office NP314-15. (2015). United Kingdom: The United Kingdom Hydrogradhic Office.

MLA Style

Admiralty : The Nautical Almanac Her Majesty's Nautical Almanac Office NP314-15. . United Kingdom: The United Kingdom Hydrogradhic Office, 2015. Text.