VERMES,JEAN C. (1981). SECRETARY'S BOOK OF INSTANT LETTERS. D B TARAPOREVALA SONS & CO.
Lua i Stíl Chicago (17ú heag.)VERMES,JEAN C. SECRETARY'S BOOK OF INSTANT LETTERS. BOMBAY: D B TARAPOREVALA SONS & CO, 1981.
Lua MLA (9ú heag.)VERMES,JEAN C. SECRETARY'S BOOK OF INSTANT LETTERS. D B TARAPOREVALA SONS & CO, 1981.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.