PAL, S. K. (1982). Statistical techniques ; a basic approach to geography. Tata McGraw-Hill.
Cita Chicago (17th ed.)PAL, Saroj K. Statistical Techniques ; a Basic Approach to Geography. New Delhi: Tata McGraw-Hill, 1982.
Cita MLA (9th ed.)PAL, Saroj K. Statistical Techniques ; a Basic Approach to Geography. Tata McGraw-Hill, 1982.
Atenció: Aquestes cites poden no estar 100% correctes.