Well, I have to say that the cookbook with the recipe is back in the US. Will ask Mom if she can find it easily.
However, it's pretty simple, and I rarely stick exactly to a recipe anyway. It was basically one can of chickpeas, a tad of oil to lubricate (I use vegetable but olive is fine), 2 cloves of crushed garlic and the juice of one lemon. Garnish with paprika. I think I added some salt as well and often a bit of chili pepper. The trouble with hummous is that when you first make it, the flavors have not absorbed yet and it can taste very weak. Ideally you should whip it up, maybe with less then what I have suggested above, let it sit in the fridge for a couple hours or even overnight, and then check for taste. Back in the US I'd use a mini food processor but here I only have one of those hand blenders.