Gupta, S. P., & Gupta, M. P. (1994). Business statistics. Sultan Chand & Sons.
芝加哥风格引文Gupta, S. P., 与 M. P. Gupta. Business Statistics. New Delhi: Sultan Chand & Sons, 1994.
MLA引文Gupta, S. P., 与 M. P. Gupta. Business Statistics. Sultan Chand & Sons, 1994.
警告：这些引文格式不一定是100％准确.