I'm sorry I don't have any links but I have Mel's first book on SFG. He had it in the ground so the SFG idea really isn't about having a raised bed garden. It is about having the plants spaced in a square foot instead of rows. I thin the main attraction with the raised bed method is because you mix the soil so you can get the balance easier where if you are working with the ground, you have to test a lot and amend the soil a lot. If I were you, I would just garden like normal but just change the spacing.

Jen

If I were doing it in the ground, I would probably spread a bag of compost over the designated area and then when planting the veggies add a trowel of Mel's Mix or just compost. It is very doable and cheaper too!

Yup It is the spacing that makes a square foot garden. Raised beds not needed! I have a 4 x 28 non-raised bed and a 4 x 12 raised bed both work great. Different, but great. tishtoshnm has it nailed. Have fun.

Curt~