GUPTA S C. (1990). BUSINESS STATISTICS. HIMALAYA PUBLISHING HOUSE.
Cita Chicago (17th ed.)GUPTA S C. BUSINESS STATISTICS. NEW DELHI: HIMALAYA PUBLISHING HOUSE, 1990.
Cita MLA (9th ed.)GUPTA S C. BUSINESS STATISTICS. HIMALAYA PUBLISHING HOUSE, 1990.
Atenció: Aquestes cites poden no estar 100% correctes.