Risk, J. C. (1973). British orders and decorations. J. B. Hayward.
Lua i Stíl Chicago (17ú heag.)Risk, James Charles. British Orders and Decorations. London: J. B. Hayward, 1973.
Lua MLA (8ú heag.)Risk, James Charles. British Orders and Decorations. J. B. Hayward, 1973.
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