Coba jelasin Daftar pustaka dari Ken (boneka) dong

"Barbie and Ken: History." Olsen, Eric. Blog Critics Magazine, 15 February 2004. 15 February 2004.

"How do Barbie and Ken Measure Up?" Berg-Cross, Linda. Psychotherapy Letter. Apr96, Vol. 8 Issue 4, p3, 1/3p.

Mattel History. 2001 Mattel Inc.