Ries, A. (1989). Bottom up marketing. Mcgraw Hill Book Company.
Chicagoスタイル(17版)引用形式Ries, Al. Bottom Up Marketing. New York: Mcgraw Hill Book Company, 1989.
MLA(9版)引用形式Ries, Al. Bottom Up Marketing. Mcgraw Hill Book Company, 1989.
警告: この引用は必ずしも正確ではありません.