ROARK, R. J., & YOUNG, W. (1982). Formulas for stress and starin.-- Ed. 5. McGraw-Hill Bo. Co.
Lua i Stíl Chicago (17ú heag.)ROARK, Raymond J., agus Warren YOUNG. Formulas for Stress and Starin.-- Ed. 5. New York: McGraw-Hill Bo. Co, 1982.
Lua MLA (9ú heag.)ROARK, Raymond J., agus Warren YOUNG. Formulas for Stress and Starin.-- Ed. 5. McGraw-Hill Bo. Co, 1982.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.