Ellison NM, Byar DP, Newell GR (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. PMID683212.CS1-vedlikehold: Flere navn: forfatterliste (link)
Moertel CG, Ames MM, Kovach JS, Moyer TP, Rubin JR, Tinker JH (1981). «A pharmacologic and toxicological study of amygdalin». JAMA. 245 (6): 591–4. PMID7005480. doi:10.1001/jama.245.6.591.CS1-vedlikehold: Flere navn: forfatterliste (link)
Boriss, Hayley; Brunke, Henrich; Kreith, Marcia (2006). «Commodity Profile: Apricots»(PDF). Agricultural Issues Center, University of California. s. 2. Besøkt 16. juli 2010. «The world’s largest producers of apricots are Turkey and Iran, accounting for 18 percent and 12 percent of world apricot production respectively.»