@book{knuth-tb,
  author = {Donald Ervin Knuth},
  title = {The \TeX book},
  location = {Reading (MA, USA)},
  publisher = {Addison-Wesley},
  year = {1986},
  pagetotal = {x+483},
  isbn = {0-201-13448-9},
}

@book{knuth-ttp,
  author = {Donald Ervin Knuth},
  title = {\TeX: The Program},
  location = {Reading (MA, USA)},
  publisher = {Addison-Wesley},
  year = {1986},
  pagetotal = {624},
  isbn = {0-201-13437-3},
}