Blitzer, R. (2009). Thinking mathematically (Custom edition for Ivy Tech Community College.). Custom Publishing.
Dyfyniad Arddull ChicagoBlitzer, Robert. Thinking Mathematically. Custom edition for Ivy Tech Community College. New York: Custom Publishing, 2009.
Dyfyniad MLABlitzer, Robert. Thinking Mathematically. Custom edition for Ivy Tech Community College. Custom Publishing, 2009.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.