Lua APA (7ú heag.)

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.

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