Roller, D. (1989). How to make big money in multi-level marketing. Prentice-Hall.
Chicago Style (17th ed.) CitationRoller, Dave. How to Make Big Money in Multi-level Marketing. Englewood Cliffs: Prentice-Hall, 1989.
MLA (8th ed.) CitationRoller, Dave. How to Make Big Money in Multi-level Marketing. Prentice-Hall, 1989.
Warning: These citations may not always be 100% accurate.