Citing Conference Papers and Webpages causes bugs.

Hello, I'm using LaTeX with TeXStudio, and Mendeley and found some bugs when citing certain sources: 1) Citing a conference paper, I always get a fullstop and a comma after the pages in brackets. Like this: "(pp. 123-132)., Paris." 2) Citing a Webpage, the url is not printed. 3) Citing a Book Section, the "chapter X" is not capitalized. It looks like this (not sure if this is APA conform...): Cognitive Engineering Research (1st ed.). chapter 2, (pp. 59-123). Would be great if you could help! Thanks, Saskia