This paper presents an auto-referencing framework and method applicable to notational labels in working drawings. The framework cross-references drawing information and updates label contents distributed in drawings. The method is applied to drawing labels, which are mainly the types or numbers of finishes, openings, or equipment, to represent the attributes or specifications of certain building components. Auto-referencing extends the functionality of traditional schedules in referencing inter-relationships between labels and drawing contents. The referencing method can also prevent mistakes due to draftspersons'mis-coordination, improve drawing management efficiency, and reduce reviewing time. One case is presented with created notational symbols, which can be easily used by most architectural firms. Demonstrations are illustrated accordingly.