"Essentials of Programming Languages" (2nd ed) by Daniel P. Friedman, Mitchell Wand and Christopher T. Haynes, MIT Press, ISBN 0-262-06217-8, 2001.

Walid Taha "Essentials of Programming Languages" (2nd ed) by Daniel P. Friedman, Mitchell Wand and Christopher T. Haynes, MIT Press, ISBN 0-262-06217-8, 2001. 829-831 2003 13 J. Funct. Program. 4 http://dx.doi.org/10.1017/S0956796803254873 db/journals/jfp/jfp13.html#Taha03a