Trade associations--sometimes called industry associations --provide industry news, analysis, and statistics. They are a great way to discover current trends and concerns of the industry!
To find the trade associations for your industry, Google the name of the industry plus the word "association" as in:
Optionally, you may wish to visit Marketing Mentor's extensive list of trade associations.
For tips on citing print and electronic sources, visit Trexler Library's Citation Guides for Print and Electronic Resources.
Or visit the Online Writing Lab at Purdue.
For automated citation, try the shareware Zotero. Directions for installing Zotero here.
For help with annotated bibliographies, visit Purdue's Online Writing Lab for definitions and format of an annotation.