Sonal singh. (1998). Universe of knowledge: Structure and development (1st.). Raj.
Chicago Edition CitationSonal singh. Universe of Knowledge: Structure and Development. 1st. Jaipur: Raj, 1998.
Cita MLASonal singh. Universe of Knowledge: Structure and Development. 1st. Raj, 1998.
Atenció: Aquestes cites poden no estar 100% correctes.