The 500-page book includes an appendix listing a number of alleged factual errors in Obama's 1995 memoir, "Dreams from my Father," such as quotes incorrectly attributed to Ndesandjo's mother.
"It's a correction. A lot of the stuff that Barack wrote is wrong in that book and I can understand that because to me for him the book was a tool for fashioning an identity and he was using composites," Ndesandjo said.
"I wanted to bring it up because first of all I wanted the record to be straight. I wanted to tell my own story, not let people tell it for me," he said.