Edwards, C., & Ruttimann, G. (1985). ISOMETRIES OF GL-SPACES.
Lua i Stíl Chicago (17ú heag.)Edwards, C., agus G. Ruttimann. ISOMETRIES OF GL-SPACES. 1985.
Lua MLA (9ú heag.)Edwards, C., agus G. Ruttimann. ISOMETRIES OF GL-SPACES. 1985.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.