The Monsters Know What They're Doing     Dungeons And Dragons original/official source
Monstrosities     Swords & Wizardry original/official source
Angry Golem (web)     D&D 5e original/official source
Pathfinder 1e Bestiary 1     Pathfinder original/official source
Pathfinder 2e Bestiary 1     Pathfinder (no source link)
Mythic Monster Manual v2     Pathfinder original/official source
Monster Manual     D&D 5e (no source link)
Monster Manual Expanded v1     D&D 5e original/official source