Sumner, W. G. (1898). "The Spanish dollar and the colonial shilling, pp 616-617: 24.038g fine / 27.07g = 0.89". The American Historical Review. 3 (4): 607–619. doi:10.2307/1834139. JSTOR1834139.
Sumner, W. G. (1898). "The Spanish Dollar and the Colonial Shilling". The American Historical Review. 3 (4): 607–619. doi:10.2307/1834139. JSTOR1834139.
Sumner, W. G. (1898). "The Spanish dollar and the colonial shilling, pp 616-617: 24.038g fine / 27.07g = 0.89". The American Historical Review. 3 (4): 607–619. doi:10.2307/1834139. JSTOR1834139.
Sumner, W. G. (1898). "The Spanish Dollar and the Colonial Shilling". The American Historical Review. 3 (4): 607–619. doi:10.2307/1834139. JSTOR1834139.
"History: Fact Sheet 1"(PDF). Royal Australian Mint. Australian Government. Archived from the original(PDF) on 12 March 2011. Retrieved 16 December 2015.
"History: Fact Sheet 1"(PDF). Royal Australian Mint. Australian Government. Archived from the original(PDF) on 12 March 2011. Retrieved 16 December 2015.