Leeson, M. (1983). Programming logic. Science Research Associates.
Lua i Stíl Chicago (17ú heag.)Leeson, Marjorie. Programming Logic. Chicago: Science Research Associates, 1983.
Lua MLA (8ú heag.)Leeson, Marjorie. Programming Logic. Science Research Associates, 1983.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.