Ellison NM; Byar DP; Newell GR (Σεπτέμβριος 1978). «Special report on Laetrile: the NCI Laetrile Review. Results of the National Cancer Institute's retrospective Laetrile analysis». N. Engl. J. Med.299 (10): 549–52. doi:10.1056/NEJM197809072991013. PMID683212.
Moertel CG; Ames MM; Kovach JS; Moyer TP; Rubin JR; Tinker JH (Φεβρουάριος 1981). «A pharmacologic and toxicological study of amygdalin». Journal of the American Medical Association (JAMA)245 (6): 591–4. doi:10.1001/jama.245.6.591. PMID7005480.
Ellison NM; Byar DP; Newell GR (Σεπτέμβριος 1978). «Special report on Laetrile: the NCI Laetrile Review. Results of the National Cancer Institute's retrospective Laetrile analysis». N. Engl. J. Med.299 (10): 549–52. doi:10.1056/NEJM197809072991013. PMID683212.
Moertel CG; Ames MM; Kovach JS; Moyer TP; Rubin JR; Tinker JH (Φεβρουάριος 1981). «A pharmacologic and toxicological study of amygdalin». Journal of the American Medical Association (JAMA)245 (6): 591–4. doi:10.1001/jama.245.6.591. PMID7005480.