STEVENS. (1989). PRACTICAL PROBLEM SOLVING. UNIVERSAL BOOK.
Lua i Stíl Chicago (17ú heag.)STEVENS. PRACTICAL PROBLEM SOLVING. UNIVERSAL BOOK, 1989.
Lua MLA (9ú heag.)STEVENS. PRACTICAL PROBLEM SOLVING. UNIVERSAL BOOK, 1989.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.