Rujukan Penjujukan protein

  1. ↑ "Biosynthesis and incorporation into protein of norleucine by Escherichia coli". The Journal of Biological Chemistry. 264 (1): 531–9. January 1989. PMID 2642478.
  2. ↑ Michail A. Alterman; Peter Hunziker (2 December 2011). Amino Acid Analysis: Methods and Protocols. Humana Press. ISBN 978-1-61779-444-5.