As stated with the cases, the full legal citation for a statute is only needed the first time you cite the statute. If the statute is referenced subsequently in the same discussion, you may use the short form of the citation. As with cases, there are two short form options for statutes:
B12.2 (p. 20): Bluepages rules for statute short forms.
Rule 12.10 (p.133): Rules on short forms for statutes.
Handy guide for determining when and where to use short forms for statutes: