Genentech (6 setembre 1978). "The insulin synthesis is the first laboratory production DNA technology". Nota de premsa. Consulta: 7 gener 2009. Arxivat de l'original a data de 9 maig 2006. “The achievement may be the most significant advance in the treatment of diabetes since the development of animal insulin for human use in the 1920's.”
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Chittaranjan Kole, Charles Michler i Albert G. Abbott, Transgenic Crop Plants, v.2, p.405: Deployment: Regulations and steps for comercialisation (anglès)
Genentech (6 setembre 1978). "The insulin synthesis is the first laboratory production DNA technology". Nota de premsa. Consulta: 7 gener 2009. Arxivat de l'original a data de 9 maig 2006. “The achievement may be the most significant advance in the treatment of diabetes since the development of animal insulin for human use in the 1920's.”
«Guidelines for research involving recombinant DNA molecules». Federal Register. U.S. Government Printing Office, 41, 131, 1976, pàg. 27911–27943. OCLC: 43751041.