Selby, N., & Bledsoe, P. S. (2003). Essential college English: A grammar, punctuation and writing workbook (6th ed.). Longman.
Lua i Stíl Chicago (17ú heag.)Selby, Norwood, agus Pamela S. Bledsoe. Essential College English: A Grammar, Punctuation and Writing Workbook. 6th ed. New York: Longman, 2003.
Lua MLA (9ú heag.)Selby, Norwood, agus Pamela S. Bledsoe. Essential College English: A Grammar, Punctuation and Writing Workbook. 6th ed. Longman, 2003.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.