Kelsch, M. L., & Kelsch, T. (1981). Writing effectively: A practical guide. Prentice-Hall.
Lua i Stíl Chicago (17ú heag.)Kelsch, Mary Lynn, agus Thomas Kelsch. Writing Effectively: A Practical Guide. Englewood Cliffs, N.J.: Prentice-Hall, 1981.
Lua MLA (8ú heag.)Kelsch, Mary Lynn, agus Thomas Kelsch. Writing Effectively: A Practical Guide. Prentice-Hall, 1981.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.