What is the ISBN of The Big Book Alcoholics Anonymous?

their is a print out which is a book mark that they give you in AA, ITS YELLOW and it tells you where to find -the Word s-friendship-love-sex-family,ect by page and where it is exactly in the book, but you have to go to an AA meeting to receive this marker. sometimes just reading it for yourself and using a yellow marker to underline these things couldn't hurt either, but the book also comes from the AA group, and its 11.00 dollars, if you go on-line but at a meeting its free.