There are a variety of ways to do this. I am new but have come across a few techniques.
You need to decide if you want to keep the original pages in tact? If so, then you would want to photo copy them. Most techniques need a toner base paper copy but a few new ones are with inkjet printers. If I get more details on other techniques, I will try to find my way back here. - lol. Here is one way to transfer.
Packing Tape Technique:
Get your toner base photo/paper copy. Lay a strip of wide, clear packing tape on the area that you want to transfer.
* (note: If the tape does not cover the width of what you want to transfer, then you can overlap the next strip of tape.
Next: Burnish or rub it down really well. This gets out air bubbles and makes sure you have a good contact. You can use a bone folder, something hard, flat & smooth, or your fingers.
Place the taped paper in a bowl of warm water. They say about 15-20 minutes.
Remove the piece from the water. Firmly rub the back (paper side) with your thumb(s) to roll the paper off.
* (Note: It is good if you can be at a sink for this step to rinse the tiny paper pieces out of your way)
After the paper has been completely rubbed off, turn over and see your transparency image.
Look at the different effects it has just by laying it on different colored paper or backgrounds. It really changes the look of the piece.
Have fun & let me know if you want other ways to do the transfer.