All information that is retrieved in any form for research must be viewed in a critical manner to ensure that it is credible. This is true with grey literature as it encompasses all forms of work, both physical and electronic.
See our guide:
The following evaluation checklist, proposed by Tyndall, covers points particularly important for evaluating grey literature -
AACODS (Authority, Accuracy, Coverage, Objectivity, Date, Significance) incorporates the following ideas:
Tyndall, J. (2008). How low can you go? Towards a hierarchy of grey literature. Presented at Dreaming 08: Australian Library and Information Association Biennial Conference, 2-5 September 2008, Alice Springs. http://hdl.handle.net/2328/3326