Gaya APA

Smith, R, K. (s.a.). Multilevel Marketing : Alwyer looks at amway, shaklee, and other direct sales businesses . : Baken Book House.

Gaya MLA

Smith, Rodney, K.. "Multilevel Marketing : Alwyer looks at amway, shaklee, and other direct sales businesses". : Baken Book House, s.a.. Text.