I had a research question today that turned up something curious. I was trying to locate an article that resulted from a presentation given way back in 1996. The citation provided was from a reliable and noteworthy source but upon further investigation it turns out that the paper was never presented and the results of the study were never released yet the author and title are clearly noted in the bibliography of this major reference work.
Somebody at the publishing house didn't do their "research". Verify your sources.
Shame... Shame...