Gaya APA

Castle, H, N, A, O, R, G, O, H. (1953). The abridged nautical almanac . London: Her Majesty.

Gaya MLA

Castle, H.M., Nautical, Almanac, Office,, Royal, Greenwich, Observatory,, Hersmonceux. "The abridged nautical almanac". London: Her Majesty, 1953. Text.