Answer:
The three types of technical information sources are:
Vendor and manufacturer Web sites.
Technology-oriented Web sites and publications.
Professional society Web sites.
Step-by-step explanation:
Professional society Web sites provide most unbiased information.
These professional social websites are non profit companies as opposed to other sources of information that are profit making.
Social websites provides with the information that can help their members in a best way about getting information of their interest. This is done in an unbiased way because they do not work for some specific organizations or companies that want to sell their products or services.