Educational Services Industry Yearbook. IHS, Inc.
Chicago Style (17th ed.) CitationEducational Services Industry Yearbook. IHS, Inc.
MLA引文Educational Services Industry Yearbook. IHS, Inc.
警告：這些引文格式不一定是100％准確.
APA引文
Educational Services Industry Yearbook. IHS, Inc.
Chicago Style (17th ed.) CitationEducational Services Industry Yearbook. IHS, Inc.
MLA引文Educational Services Industry Yearbook. IHS, Inc.