ROLLER, D. (1989). How To Make Big Money In Multilevel Marketing. Prentice-Hall.
Chicagoスタイル(17版)引用形式ROLLER, David. How To Make Big Money In Multilevel Marketing. Prentice-Hall, 1989.
MLA(8版)引用形式ROLLER, David. How To Make Big Money In Multilevel Marketing. Prentice-Hall, 1989.
警告: この引用は必ずしも正確ではありません.