Hi, I went and checked out the on line knitting book I know of and it had only a little that would apply, but it may be all you need. Go to this page
and look at the heading above picture 20 and picture 20 itself. She shows where to put the needle in to sew a purl stitch there and maybe that will work. Look around there at the other ideas for seaming and maybe make a couple of little swatches to practice seaming up. Do a little experimenting and maybe you will find something that works with the information there.