JOHN DAINTITH. "transistor-transistor logic." A Dictionary of Computing. 2004. Encyclopedia.com. 29 Nov. 2009 <http://www.encyclopedia.com>.
JOHN DAINTITH. "transistor-transistor logic." A Dictionary of Computing. 2004. Encyclopedia.com. (November 29, 2009). http://www.encyclopedia.com/doc/1O11-transistortransistorlogic.html
JOHN DAINTITH. "transistor-transistor logic." A Dictionary of Computing. 2004. Retrieved November 29, 2009 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O11-transistortransistorlogic.html