(1992). Webster's 21st century: Complete guide to speech, style and grammar. T. Nelson.
Lua i Stíl Chicago (17ú heag.)Webster's 21st Century: Complete Guide to Speech, Style and Grammar. Nashville: T. Nelson, 1992.
Lua MLA (9ú heag.)Webster's 21st Century: Complete Guide to Speech, Style and Grammar. T. Nelson, 1992.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.