Bibliographic formats

https://en.wikipedia.org/wiki/Resource_Description_and_Access

http://www.rda-rsc.org/content/about-rda

Fotis Lazarinis: Cataloguing and Classification: An introduction to AACR2, RDA, DDC, LCC, LCSH and MARC 21 Standards. Chandos Publishing, 2014.

https://www.oclc.org/bibformats/en.html

http://www.loc.gov/marc/RDAinMARC.html

https://authorities.loc.gov/

https://lccn.loc.gov/n2004091456

http://viaf.org/