Only use punctuation when grammatically necessary, and not to indicate abbreviation. For example, abbreviate the Auckland District Law Society to “ADLS”, not “A.D.L.S.”

When punctuation is removed from acronyms, initialisms or abbreviated names (the names of journals, for example), it may be necessary to leave a space where the full stop was. Generally, a space will follow words that have been abbreviated to more than a single letter.