Không rõ. (1999). Visible analyst: Tutorial on structured methods and the repository. VisibleSystemsCorporation.
Trích dẫn kiểu ChicagoKhông rõ. Visible Analyst: Tutorial On Structured Methods and the Repository. VisibleSystemsCorporation, 1999.
MLA引文Không rõ. Visible Analyst: Tutorial On Structured Methods and the Repository. VisibleSystemsCorporation, 1999.
警告:這些引文格式不一定是100%准確.