por Friedman, Daniel P [autor] | Felleisen, Matthias [autor] | Bibby, Duane [ilustrador] | Sussman, Gerald J [prologuista].
por Friedman, Daniel P [autor] | Felleisen, Matthias [autor] | Bibby, Duane [ilustrador] | Steele, Guy L, 1954- [prologuista] | Massachusetts Institute of Technology.