Justin Bieber's mom writing autobiography

London, March 9 -- Teen pop sensation Justin Biebers mother Pattie Mallette is writing a memoir to tell the story how she has raised the 18-year-old superstar as a single parent.The book 'Nowhere But Up: The Story of Justin Bieber's Mom' in which Bieber will write the foreword, will be released on September 18, the Daily Star reported.In the autobiography, Mallette will also talk about how she had battled abuse and addiction in her childhood and teenage years before attempting suicide at 17 and how she ultimately overcame all the weaknesses in order to raise her son."Pattie's story is a powerful example of courage and determination that will inspire anyone who has faced struggles in life," said Jennifer Leep, Editorial Director for publisher Revell in a statement.