APA Style

Admiralty : The Nautical Almanac Her Majesty's Nautical Almanac Office NP314-17 2017. (2016). United Kingdom: United Kingdom Hydrographic Office.

MLA Style

Admiralty : The Nautical Almanac Her Majesty's Nautical Almanac Office NP314-17 2017. . United Kingdom: United Kingdom Hydrographic Office, 2016. Text.