While some commenters questions, “what’s the big deal?!, others penned feelings of betrayal at Armstrong.

“You feel embarrassed for recommending his book to people. You stare at the books on the shelf, questioning if hte lessons are honest and real,” noted one poster.

Manly Library has said an internal review is underway to look into the matter.

“Libraries can’t arbitrarily reclassify categories of books, because that depends on the ISBN number that is issued by the National Library.” a spokesperson at Manly Council told Reuters.

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