Monsters, Inc.
モンスターズ・インク · もんすたーず いんく
est. Rough estimate based on volume count, reprints and magazine — not an official figure
Overview
Sulley and Mike work at Monsters, Inc., the biggest scream processing plant in Monstropolis. When one little child named Boo wanders into their world, it's the monsters who are scared silly. Thinking she is dangerous and toxic, Sulley and Mike do their best to return Boo to her bedroom, but there are some monstrous hurdles in their way. (Source: TokyoPop)
Source: AniList
External databases: MADB · AniList
How to compare editions, collected volumes and ISBNs / Sources, updates and corrections