- The Nashville Number System by Chas Williams, 2005-07-15
- The Structure of the Real Number System by Leon W. Cohen, Gertrude Ehrlich, 1963
- The Structure of Number Systems (Teachers' Mathematics Reference Series) by Francis D. Parker, 1966
- The Number System (Dover Books on Mathematics) by H. A. Thurston, 2007-04-19
- Practice Problems in Number: Systems, Logic and Boolean Algebra by Edward Burstein, 1977-07
- Can You Count in Greek?: Exploring Ancient Number Systems, Grades 5-8 by Judy Leimbach, Kathy Leimbach, 2005-06-01
- Landmarks In The Hundreds: The Number System
- Landmarks in the Thousands: The Number System (Investigations in Number, Data and Space Series by Andee Rubin, Susan J. Russell, et all 1997-05
- The Secret Life of Math: Discover How (And Why) Numbers Have Survived From The Cave Dwellers To Us! (A Williamson's Kids Can! Book) by Ann McCallum, 2005-09-15
- THE NASHVILLE NUMBER SYSTEM DIAL A CHORD by John Duck, 2008
- The History of Zero: Exploring Our Place-Value Number System (Math for the Real World) by Tika Downey, 2004-08
- The Number Systems: Foundations of Algebra and Analysis (AMS Chelsea Publishing) by Solomon Feferman, 2005-01
- Number Systems and the Foundations of Analysis by Elliott Mendelson, 2008-12-18
- Introduction to Mathematical Thinking: Algebra and Number Systems by Will J. Gilbert, Scott A. Vanstone, 2004-08-01
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