Aggarwal R S. S Chand's Advanced Objective General Knowledge. S Chand.
Cita Chicago (17th ed.)Aggarwal R S. S Chand's Advanced Objective General Knowledge. S Chand.
Cita MLA (9th ed.)Aggarwal R S. S Chand's Advanced Objective General Knowledge. S Chand.
Atenció: Aquestes cites poden no estar 100% correctes.