Sorting these covers by decade
The Perks of Being a Wallflower by decade
Stephen Chbosky
31 covers from 35 printings with a known year, 2020s back to 1990s
2020s
2 covers · 2 publishers, АЗБУКА and Feniks Kitap among them
2010s
18 covers · 10 of 19 printings say paperback · 15 publishers, Midwest Tape and MTV Books/Gallery Books among them · 6 languages
2000s
6 covers · 5 of 7 printings say paperback · 6 publishers, Pocket Books and Alma Littera among them · 3 languages
1990s
5 covers · 2 of 8 printings say hardcover · 6 publishers, MTV Books and Recorded Books among them
Covers from Open Library, each in the decade of the earliest printing that carries it. What the catalogues never scanned is missing here too. See the whole wall.