The Monsters Know What They're Doing     Dungeons And Dragons (no source link)
Flee, Mortals     D&D 5e (no source link)
Monster Ecology Anthology     D&D 5e (no source link)
D&D 2e Monstrous Manual     D&D 2e (no source link)
Scruffy Grognard's Monstrous Manual     D&D 2e (no source link)
AD&D Monster Manual     AD&D 1e (no source link)
The Monster Overhaul     OSR (no source link)