Lɛ̀ᵹᵹere· dall’inizzjo alla fine:
- Artìkoli akkadɛ̀mici tɛ̀nnici
- Artìkoli akkadɛ̀mici stɔ̀rici
- Artìkoli akkadɛ̀mici filoʃɔ̀fici
- Artìkoli akkadɛ̀mici klàssici
- D. Green and others., Overjustification in a Token Economy, 1976, English.
- J. Kruger & D. Dunning, Unskilled and Unaware of It, 1999, English.
- M.D. Merlin, Archaeological Evidence for the Tradition of Psychoactive Plant Use in the Old World, 2003, English. F8: ancient history of psychoactive drugs.