Use italics with maximal capitalisation for the full title of an Act, including the year:

After the first mention of the full title in the text, a shortened form can be used. Use maximal capitalisation but not italics for this shortened form:

The unit of legislation within an Act is called a section. Refer to sections of Acts as follows:

It is unusual to spell out section within a sentence but, if doing so, use a lower-case s.