kazuhikk i have given you both 4th and 5th edition links.
what you are trying to find the The critical reader there is no single book name by critical reader it is just a label or writer’s brand name for publishing books.
if you google the The critical reader you will get the fourth edition of the critical reader: the ultimate guide to sat
here is the amazon.in link - https://www.amazon.in/Critical-Reader-Complete-Reading-Fourth/dp/173358952X
edit: you can verify the amazon link by matching the both isbn no given by you.
here is the collection of all the author’s books - https://thecriticalreader.com/books-3/
and if you check the all books on official website of writer you will see the the critical reader is printed on every book cover