Layton, W. (1922). An introduction to the study of prices: With special reference to the history of the nineteenth century. Macmillan.
Lua i Stíl Chicago (17ú heag.)Layton, Walter. An Introduction to the Study of Prices: With Special Reference to the History of the Nineteenth Century. London: Macmillan, 1922.
Lua MLA (8ú heag.)Layton, Walter. An Introduction to the Study of Prices: With Special Reference to the History of the Nineteenth Century. Macmillan, 1922.
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