<prompt> Translate the following text to SwahiliKarenga, Kwanzaas creator, has also written two books on the celebration, Origin, Concepts, Practice and The African American Celebration of A Celebration of Family, Community and Culture . And Anna Day Wilde describes how the holiday gained popularity in Mainstreaming Kwanzaa, in Public Interest , No.  <response>: Karenga, mwanzilishi wa Kwanzaa, pia ameandika vitabu viwili juu ya sherehe hiyo, Asili, Dhana, Mazoezi na Sherehe ya Familia, Jumuiya na Utamaduni ya Waafrika na Wamarekani. 