Cita APA (7a ed.)

ROLLER, D. (1989). How To Make Big Money In Multilevel Marketing. Prentice-Hall.

Cita Chicago Style (17a ed.)

ROLLER, David. How To Make Big Money In Multilevel Marketing. Prentice-Hall, 1989.

Cita MLA (8a ed.)

ROLLER, David. How To Make Big Money In Multilevel Marketing. Prentice-Hall, 1989.