The Monsters Know What They're Doing     Dungeons And Dragons (no source link)
Pathfinder 2e Bestiary 1     Pathfinder (no source link)
Monster Ecology Anthology     D&D 5e (no source link)
AD&D Monster Manual     AD&D 1e (no source link)
Monster Ecyclopaedia v2: Dark Bestiary     d20 (no source link)
Adventures Dark And Deep     Adventures Dark And Deep (no source link)