Karlson David. (2004). Marketing Your Consulting or Professional Services. Viva Books.
Chicagoスタイル(17版)引用形式Karlson David. Marketing Your Consulting or Professional Services. New Delhi: Viva Books, 2004.
MLA(9版)引用形式Karlson David. Marketing Your Consulting or Professional Services. Viva Books, 2004.
警告: この引用は必ずしも正確ではありません.