American engineer. Simmons-Boardman Pub. Corp.
Lua i Stíl Chicago (17ú heag.)American Engineer. New York: Simmons-Boardman Pub. Corp.
Lua MLA (8ú heag.)American Engineer. Simmons-Boardman Pub. Corp.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.