Christensen, M. (2007). Be a network marketing superstar: The one book you need to make more money than you ever thought possible. New York, NY: AMACOM.
Trích dẫn kiểu ChicagoChristensen, Mary. Be a Network Marketing Superstar: The One Book You Need to Make More Money Than You Ever Thought Possible. New York, NY: AMACOM, 2007.
Trích dẫn MLAChristensen, Mary. Be a Network Marketing Superstar: The One Book You Need to Make More Money Than You Ever Thought Possible. New York, NY: AMACOM, 2007.
Cảnh báo: Các trích dẫn này có thể không phải lúc nào cũng chính xác 100%.