Howard, E. (2021). Coins of England and the United Kingdom: Decimal Issues. Spink & Son Limited.
Lua i Stíl Chicago (17ú heag.)Howard, Emma. Coins of England and the United Kingdom: Decimal Issues. Havertown: Spink & Son Limited, 2021.
Lua MLA (9ú heag.)Howard, Emma. Coins of England and the United Kingdom: Decimal Issues. Spink & Son Limited, 2021.
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