If your intent is for reviewing change orders to verify the costs, I don't think necessarily you can reference a book and automatically be able to determine if the respective cost is justified. I don't think there are any short-cuts you can employ and just as estimating takes long hard years to perfect, so does examing a cost and being able to determine if it's in the ball park.
The references mentioned are all great resources, good luck using Means change order information as most of the time it's low and doesn't take into account; out of sequence work, overall quality of the engineering for the project and how well it is/was coordinated, overall job progress/degree of completion.
Where you have two camps, the client wanting the lowest possible price and the contractor wanting to stay in business after having already gotten the project by bidding his lowest possible price,(including any mistakes with the original bid by anyone) with any resulting change orders you'll have plenty of conflict. On top of that add in the overhead of a cost consultant, good luck.