Milligan, J. E. (1974). Celestial navigation by H.O.249. Maritime press.
シカゴスタイル引用形Milligan, John E. Celestial Navigation by H.O.249. Cambridge: Maritime press, 1974.
MLA引用形式Milligan, John E. Celestial Navigation by H.O.249. Maritime press, 1974.
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