Can we know things which are beyond our personal present experience?
Is eyewitness testimony a reliable source of evidence?
Can our beliefes contaminate our memory?
These example stimulus questions (provided in the IB Theory of knowledge guide) could be in your mind as you look at the resource suggestions listed below.
In addition to the suggestions above, you can also try databases, such as JSTOR, Project Muse and ProQuest Central, on the Reference Sites page of the College Portal (website).