YAWIN, R. A. (1987). Arithmetic For College Students Robert A. Yawin. WM C.Brown Publisher.
Lua i Stíl Chicago (17ú heag.)YAWIN, Robert A. Arithmetic For College Students Robert A. Yawin. WM C.Brown Publisher, 1987.
Lua MLA (8ú heag.)YAWIN, Robert A. Arithmetic For College Students Robert A. Yawin. WM C.Brown Publisher, 1987.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.