Pellegrini, Manuela; Rotolo, Maria Concetta; Marchei, Emilia; et al. (2013). “Magic truffles or Philosopher's stones: a legal way to sell psilocybin?”. Drug Testing and Analysis5 (3): 182–185. doi:10.1002/dta.1400. PMID22887928.
Pellegrini, Manuela; Rotolo, Maria Concetta; Marchei, Emilia; et al. (2013). “Magic truffles or Philosopher's stones: a legal way to sell psilocybin?”. Drug Testing and Analysis5 (3): 182–185. doi:10.1002/dta.1400. PMID22887928.