Gaya APA
The Nautical Almanac NP.314-13 : Her Majesty's Nautical Almanac Office. (2013).
United Kingdom:
Hydrografhic Office,.
Gaya MLA
The Nautical Almanac NP.314-13 : Her Majesty's Nautical Almanac Office.
2013.
United Kingdom:
Hydrografhic Office,,
2013.
Text.