Crampton, W. G. (1984). The new observer's book of flags: William G. Crampton (New, rev. ed.). Warne.
Lua i Stíl Chicago (17ú heag.)Crampton, William G. The New Observer's Book of Flags: William G. Crampton. New, rev. ed. London: Warne, 1984.
Lua MLA (8ú heag.)Crampton, William G. The New Observer's Book of Flags: William G. Crampton. New, rev. ed. Warne, 1984.
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