APA引文

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

Chicago Style (17th ed.) Citation

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

MLA引文

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