1. The United States Pharmacopeia, Official Monograph for Polyethylene Glycol. 〈https://www.uspnf.com〉 (USP-NF online, The United States Pharmacopeial Convention).
2. The European Pharmacopoeia, Official Monograph for Macrogols. 〈https://pheur.edqm.eu/home〉 (European Pharmacopoeia online, EDQM Council of Europe).
3. Poly(Ethylene Glycol) Chemistry, Biotechnical and Biomedical Applications. Edited by J. Milton Harris. In the book series “Topics in Applied Chemistry”. Copyright: Springer Science+Business Media New York 1992. Publisher: Springer New York, NY.
4. Poly(ethylene glycol), Chemistry and Biological Applications. Edited by J. Milton Harris, Samuel Zalipsky, ACS Symposium Series Volume 680, American Chemical Society, Washington, DC, 1997.
5. Effect of pegylation on pharmaceuticals;Harris;Nat. Rev. Drug Discov.,2003