Singh, R. (1977). Mathematical and statistical techniques (1st.). Sadhana Prakashan.
Chicago-čujuhus (17. p.)Singh, R. Mathematical and Statistical Techniques. 1st. Bombay: Sadhana Prakashan, 1977.
MLA-čujuhus (9. p.)Singh, R. Mathematical and Statistical Techniques. 1st. Sadhana Prakashan, 1977.
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