APA (7th ed.) Citation
Leon, A., & Leon, M. (1999). Database management systems. Leon Vikas.
Chicago Style (17th ed.) Citation
Leon, Alexis, and Mathews Leon. Database Management Systems. Chennai: Leon Vikas, 1999.
MLA (9th ed.) Citation
Leon, Alexis, and Mathews Leon. Database Management Systems. Leon Vikas, 1999.
Warning: These citations may not always be 100% accurate.