Michael, P., Mina, S.(2009).The think big manifesto: think you can't change your life (and the world)? think again .:Proyek Penelitian, Pengkajian dan Pembinaan Nilai-nilai Budaya Daerah Lampung.
Gaya MLA
Port, Michael., Samuels, Mina."The think big manifesto: think you can't change your life (and the world)? think again".:Proyek Penelitian, Pengkajian dan Pembinaan Nilai-nilai Budaya Daerah Lampung,2009.Textbook.