Gaya APA

Berne, E, C. (2007). Helen Keller: Courage in Darkness: Sterling Biographies (Cetakan Pertama). Jakarta: Sterling Children\'s Books.

Gaya MLA

Berne, Emma, Carlson. "Helen Keller: Courage in Darkness: Sterling Biographies". Cetakan Pertama Jakarta: Sterling Children\'s Books, 2007. Karya Cetak.