Autocode
↑ Knuth, Donald E.; Pardo, Luis Trabb, “Early development of programming languages”, Encyclopedia of Computer Science and Technology (Marcel Dekker) 7: 419–493
↑ London, Keith (1968). “4, Programming”. Introduction to Computers (1st ed.). 24 Russell Square London WC1: Faber and Faber Limited. p. 42-43
↑ London, Keith (1968). “4, Programming”. Introduction to Computers (1st ed.). 24 Russell Square London WC1: Faber and Faber Limited. p. 48
↑ London, Keith (1968). “4, Programming”. Introduction to Computers (1st ed.). 24 Russell Square London WC1: Faber and Faber Limited. p. 63-64
↑ London, Keith (1968). “4, Programming”. Introduction to Computers (1st ed.). 24 Russell Square London WC1: Faber and Faber Limited. p. 65