prosfilaes
Adventurer
You gave an example of the idea of rankings, which not only is insulting to everyone's intelligence as if we don't know what the word ranking means, but also didn't help the topic.
You don't seem to know what the word ranking means. It means that number 1 sells more books then number 2; not way more, not a little more, just more by some unknown amount.
You can choose to believe that, or you can choose to believe that this is some special outlier that was just edging out the rank below it by tiny numbers, in wide defiance of the broad reported averages, for unknown reasons, for 50 hours straight.
You mean just like I've seen other things do in other sales rankings where I do have hard numbers?
I think Hugh Howey sponsored a full study that included this aspect
If you bought the book that's currently the best selling on Amazon, it would point out that if you refer to a book, it should be listed as
Kidder, T. (1981). The soul of a new machine. Boston, MA: Little, Brown & Company.
That's because it's completely unclear what Hugh Howey's full study might be referring. Cornell has a full list of APA citation format at https://www.library.cornell.edu/research/citation/apa , which is generally a sufficient cite in Internet terms, because it does tell you where exactly to find that page, at least while that URL is live.