Before revision: Social norms can both be informal understandings that govern the behavior of members of a society, as well as be codified into rules and laws.
After revision: <ref name=":3">Cite URL Interests in International Society|date=1996|publisher=Cornell University Press|pages=22–24, 26–27|jstor=10.7591/j.ctt1rv61rh|isbn=9780801483233 URL rules and laws.