Adams, W. R. (1980). PREP: For better reading. Holt, Rinehart and Winston.
Lua i Stíl Chicago (17ú heag.)Adams, W. Royce. PREP: For Better Reading. New York: Holt, Rinehart and Winston, 1980.
Lua MLA (8ú heag.)Adams, W. Royce. PREP: For Better Reading. Holt, Rinehart and Winston, 1980.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.