A name should appear in full before any acronym is used for it. However, this does not apply to acronyms that are very well known, such as, NGO and UN and US.
If at all possible, avoid starting a sentence with an acronym or any other kind of abbreviation.
Where an entire sentence appears in parentheses, the full stop is placed inside the second closing bracket. (Here an entire sentence is bracketed.)
When giving starting and ending page numbers and paragraph numbers, chop off the unnecessary ones: thus 34–5 and not 34–35. Care must be taken with ‘teens’: it is 514–15 not 514–5. However, with ‘ones’ it is correct to say 20–1, 400–1 and so on.