Larson, R. (1999). Passport to mathematics: Book 1. McDougal Littell.
Lua i Stíl Chicago (17ú heag.)Larson, Ron. Passport to Mathematics: Book 1. Evanston, Illinois: McDougal Littell, 1999.
Lua MLA (9ú heag.)Larson, Ron. Passport to Mathematics: Book 1. McDougal Littell, 1999.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.