Alyssanichols (talk) 02:19, 8 March 2016 (UTC)This article is lacking a lot of information and only provides the definition and history of endogenous depression. A question I have regarding the article is can you go back and see how it used to be before people made changes to it? And also I was wondering if only having a smaller amount of information changes how credible this article is or its impact on the topic? Two references that would be good to use are:

Andrus, B. M., Blizinsky, K., Vedell, P. T., Dennis, K., Shukla, P. K., Schaffer, D. J., . . . Redei, E. E. (2010). Gene expression patterns in the hippocampus and amygdala of endogenous depression and chronic stress models. Molecular Psychiatry Mol Psychiatry, 17(1), 49-61. Retrieved February 27, 2016

Joiner, T. E. (2001). Negative attributional style, hopelessness depression and endogenous depression. Behaviour Research and Therapy, 39(2), 139-149. Retrieved February 28, 2016