Biomes and their generation within?

Well hello there, JGO!

This month I am doing stuff and experimenting on level generation. I am currently using Perlin Noise as generation for the landscape and it just looks like Perlin Noise (obviously)… So I am searching all about a biomes on the internet. On JGO there are no “good” posts about Biomes and generation, you are only able to find to-do lists like:

[quote]To-Do list:
-Biomes added.
[/quote]
So I started to search on google, but every topic about Biomes are modding-topics for MineCraft… After some time I found some good posts: How do MineCraft biomes work? and Voronoi diagram.

But the first link is more like how to do it right without a tutorial on how to do it.
And the second link is about the Voronoi Diagram. I can’t see, how I can generate rivers (small/streched) and oceans (big/not streched). Because If you use this methode you can only make biomes from the same length?

So my question is: What would be a good methode for Biomes (and their generation in the biomes)?
As you can see my English isn’t that good, so I do not understand the Voronoi Diagram fully.

I already thank you for reading this post!
-RoseSlayer