Oxford 1833 reprint
It's the 1611 version of the king james bible that is the right one. Not the 1769 version. So you should buy the 1611 version of the Authorized version (AV). Often you can find these bibles in your national internet bookstore. Search on ISBN number. First find the book on the international publishers homepage. Take the isbn number and put it directly into google or into the search field of the national internet bookstore.
The bible you need is also available for free on the internet. It is the 1833 edition.
One exception to this was a scrupulous original-spelling, page-for-page, and line-for-line reprint of the 1611 edition (including all chapter headings, marginalia, and original italicization, but with Roman type substituted for the black letter of the original), published by Oxford in 1833.
Here are links to it:
Here is another link to it:
The 1833 edition with chapter summaries is also available online in html format.
The book that you can buy on the internet :
contains the 1833 edition of the king james bible.
So i recommend that you buy that book.
You can search on google via the ISBN 
There exists an Hendrickson edition of the 1833 oxford reprint as well that is cheaper.
- Wikipedia King James Version, https://en.wikipedia.org/wiki/King_James_Version#Standard_text_of_1769
- King James Bible 400th Anniversary Edition Edited by Oxford University Press Gordon Campbell, https://global.oup.com/academic/product/king-james-bible-9780199557608?cc=se&lang=en&, ISBN: 9780199557608
- The Holy Bible: King James version: 1611 Edition Hardcover – June 1, 2003, https://www.amazon.com/Holy-Bible-King-James-version/dp/1565631609/ref=cm_cr_srp_d_product_top?ie=UTF8, ISBN: 1565631609