McClanahan, S. D., & Amstutz, D. D. (1988). Steck-Vaughn GED writing skills: Mechanics, usage, sentence structure. Steck-Vaughn Co..
Lua i Stíl Chicago (17ú heag.)McClanahan, Susan D., agus Donna D. Amstutz. Steck-Vaughn GED Writing Skills: Mechanics, Usage, Sentence Structure. Austin, TX: Steck-Vaughn Co., 1988.
Lua MLA (8ú heag.)McClanahan, Susan D., agus Donna D. Amstutz. Steck-Vaughn GED Writing Skills: Mechanics, Usage, Sentence Structure. Steck-Vaughn Co., 1988.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.