LaTeX.org

Hi,

I´m trying to use BibTex for the first time, and ran into some trouble..

I´m having the tex file testing.tex (attached file) and bibtex file references:
@book{burda,
author = "Burda",
title = "Makrookonomie",
year = "2010"
}

@article{blackholes,
author = "Bunny, R.",
title = "Black ...