A4 PAPER is used in most of the world, except for the US (and maybe Canada).
Folded in half and stapled, it makes a perfect size small book with a font size that is still readable.
Most languages list the files as A4 or 8.5X11”
WHERE TO GET A4 PAPER
I order mine from shoplet.com. The Item # is HAM103036.
One ream of 500 pages will make 83 booklets (6 pages each, double sided).
They ship very fast.
I have been using Create Booklet for Mac and it is absolutely wonderful - especially when I have an 8.5X11 document (some of the CBs) and want to print it - small size - on A4 paper, or vice versa.
You can use Create Booklet for lots of different projects, but it works great in printing Good News Coloring Books on a home computer - in booklet form.
Some computers can make booklets with pdfs in their Print section, but if yours doesn't, Create Booklet or Create Booklet 2 is a great way to make them.
You would just need an extra-long stapler to be able to staple in the center.
Extra-long staplers from office supply stores.
The easiest way is to print the GNCB out small-size, two-sided, and staple in the middle. Or you can go to a printer or office-supply store and have them spiral-bound or comb-bound. These are more expensive, but look nice.
Some of the books are labeled "Large print" or "Nursing Home". They are single language so the font can be larger. Print these out on larger size paper (11X17 in the US, or A3 elsewhere). The font is larger to make it easier for the elderly to read. Some have a woman in a wheelchair on front cover.
You will need to know this information if you plan to mail or ship them.