Beri, G. C. (1993). Marketing research (Second edition.). Tata McGraw-Hill.
Chicagoスタイル(17版)引用形式Beri, G. C. Marketing Research. Second edition. New Delhi: Tata McGraw-Hill, 1993.
MLA(8版)引用形式Beri, G. C. Marketing Research. Second edition. Tata McGraw-Hill, 1993.
警告: この引用は必ずしも正確ではありません.