ARYA,CANADA. (1989). HD BK OF BUSINESS LETTERS. KIRAN BOOK.
Chicago Style (17th ed.) CitationARYA,CANADA. HD BK OF BUSINESS LETTERS. KIRAN BOOK, 1989.
MLA引文ARYA,CANADA. HD BK OF BUSINESS LETTERS. KIRAN BOOK, 1989.
警告：這些引文格式不一定是100％准確.
APA引文