Kerber, R. (2007). Strategic product creation. Tata McGraw Hill.
Chicagoスタイル(17版)引用形式Kerber, Ronal. Strategic Product Creation. New Delhi: Tata McGraw Hill, 2007.
MLA(9版)引用形式Kerber, Ronal. Strategic Product Creation. Tata McGraw Hill, 2007.
警告: この引用は必ずしも正確ではありません.