Lua APA (7ú heag.)

Johnson, D. A., & Glenn, W. H. (1960). Understanding numeration systems. John Murray.

Lua i Stíl Chicago (17ú heag.)

Johnson, Donovan A., agus W. H. Glenn. Understanding Numeration Systems. London: John Murray, 1960.

Lua MLA (9ú heag.)

Johnson, Donovan A., agus W. H. Glenn. Understanding Numeration Systems. John Murray, 1960.

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