My own preference is for the long form, because oftentimes the short form is not perfectly clear to the legislator.
Adjectives of one syllable usually take the short form but not invariably.
The boys seized upon this to call him Veal Chops, which after a few hours was changed to the short form, or "Chops."
A short form of this tool, called the dowel bit, has the advantage of bending less readily than the ordinary auger bit.
Now, your general aptitude test battery is something distinct from the short form of test you just a moment ago mentioned, is it?
In the small room there was but one chair—the one that held Mr. Felsburg's short form.
His short form, with the naked sword which he was flourishing, talking incessantly the while, moved about in front of the troop.
It is written in the short form still used, which certainly seems to imply great antiquity.
If bibliographic footnotes are required, use the short form (author/brief title/page) with the full reference in the bibliography.
Their tongues vary from a short form like that of some fossors to the long tongues of the humble bees.