Não informado. (1991). Theoretical computer science. North Holland Publishing.
Chicago-referens (17:e uppl.)Não informado. Theoretical Computer Science. Amsterdam: North Holland Publishing, 1991.
MLA-referens (8:e uppl.)Não informado. Theoretical Computer Science. North Holland Publishing, 1991.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.