1 Pa. C.S. § 303
When reference is made in this act to a provision contained in any other section or sections of the same title such provision shall be identified without specifying the number of the title in which it appears. When reference is made in this act to a provision contained in any section or sections of this act appearing in a different title the short form of citation specified in section 102 of this title (relating to citation of Pennsylvania Consolidated Statutes) shall be used. A cross reference description based on the section heading or headings of the provisions cited shall be inserted immediately following the first occurrence of the citation in the section and following any reoccurrence of the citation which is preceded in the same section or relevant part thereof by a citation to a different section of this act. Where required for clarity in the case of cross references to subsections or other parts of a section, the cross reference description shall be based on the subject matter of the subsection or other part thereof referred to.
1 Pa.C.S. § 303