Deletion of Paradoxical Sajid

Comment: I can't find any reliable sources either: there's Facebook, and there's Wikipedia. I strongly doubts this complies with . I don't understand note 3, which is supposed to source the claim that the book "became bestseller", and which states, in full: "''Double Standard''. Bangladesh: Maktabatul Azhar. 2017. p. 5." If the book is really a bestseller, I would have expected that fact to be sourceable to a reliable source somewhere on the internet. The publisher, Guardian Publications, smells like a vanity press to me, but I admit I can't read their website, http://guardianpubs.com/. Could a Bengali speaker help
Stance: delete
Cited policy: Wikipedia:Notability (WP:NBOOK)