Need for validating information
A phone number or postal address allows you to contact the group or company and ask for more information.
In regards to the quality of an information source, it is important to note the difference between an unofficial comment made by an individual at an organization and an official statement by the same organization.A page without references still may be useful as an example of the ideas of an individual, organization, or business, but not as source of factual information.b)Is the information free of grammatical, spelling, and other typographical errors? - Such errors not only indicate a lack of attention and effort, but also can actually produce inaccuracies in information.Ph D in Wildlife Ecology from the University of Michigan), current position (Wildlife Biologist for the Department of Natural Resources), or reputation (Nobel Laureate in Biology, member of the National Academy of Sciences, etc.).Is the information from sources known to be reliable? - Statements from established and reputable organizations almost always have been seen and approved by several people.
Because it is difficult to verify the legitimacy of an individual, personal home pages may be useful sources for personal opinion, but must be used with caution when citing them as source for factual information.