Howard, E. (2021). Coins of England and the United Kingdom: Decimal Issues. Spink & Son Limited.
芝加哥风格引文Howard, Emma. Coins of England and the United Kingdom: Decimal Issues. Havertown: Spink & Son Limited, 2021.
MLA引文Howard, Emma. Coins of England and the United Kingdom: Decimal Issues. Spink & Son Limited, 2021.
警告：这些引文格式不一定是100％准确.