Help needed in water reflection theory.

Hi, everyone. I'm asking help in theory of making a reflection. I've read GPU gems about water rendering but still got no clue how to make a reflection in Unity. I'd say i'm not a total newbie in writing shaders. I'm working with my own water shader atm and everything (scrolling/dudv/vert anims) seems to work fine but I'm lacking some world reflections on the water surface. If someone can give me a clue other then "...try to study unity pro water.." I would be really grateful.

As far as I know...

Help needed in water reflection theory.