WALVOORD, B. F. (1985). Writing Strategies For All Discipline Barbara Fassler Walvoord. Prentice - Hall.
Lua i Stíl Chicago (17ú heag.)WALVOORD, Barbara Fassler. Writing Strategies For All Discipline Barbara Fassler Walvoord. Prentice - Hall, 1985.
Lua MLA (8ú heag.)WALVOORD, Barbara Fassler. Writing Strategies For All Discipline Barbara Fassler Walvoord. Prentice - Hall, 1985.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.