Παραπομπή APA

Gupta, A., & Sarkar, S. (1997). System analysis, data processing and quantitative techniques. Galgotia publications.

Παραπομπή Chicago Style

Gupta, A.K, και S.K Sarkar. System Analysis, Data Processing and Quantitative Techniques. New delhi: Galgotia publications, 1997.

Παραπομπή MLA

Gupta, A.K, και S.K Sarkar. System Analysis, Data Processing and Quantitative Techniques. Galgotia publications, 1997.