Tull, D. (1993). Marketing Research. Prentice Hall of India.
Chicagoスタイル(17版)引用形式Tull, Donald. Marketing Research. New Delhi: Prentice Hall of India, 1993.
MLA(9版)引用形式Tull, Donald. Marketing Research. Prentice Hall of India, 1993.
警告: この引用は必ずしも正確ではありません.