Pennsylvania Rules of Civil Procedure
Goodrich Amram 2d: Procedural Rules Service with Forms: KFP529 .A43 A2 1976 & available on Westlaw
Standard Pennsylvania Practice 2d: KFP530 .S85 2d & available on Westlaw
Pennsylvania Forms for the Rules of Civil Procedure: with author's summaries and comments: KFP530.A65 W48 2010