Citazione APA

Sampson, A., & Sampson, A. (1999). Mandela: The authorized biography. London: Harper Collins Publishers.

Stile di citazione Chicago

Sampson, Anthony, e Anthony Sampson. Mandela: The Authorized Biography. London: Harper Collins Publishers, 1999.

Citazione MLA

Sampson, Anthony, e Anthony Sampson. Mandela: The Authorized Biography. London: Harper Collins Publishers, 1999.

Attenzione: Queste citazioni potrebbero non essere precise al 100%.