APA Style

C., H. (2003). What I learned before I sold to Warren Buffett : an entrepreneur's guide to developing a highly successful company . New Jersey: Wiley.

MLA Style

C., Helzberg,Barnett. "What I learned before I sold to Warren Buffett : an entrepreneur's guide to developing a highly successful company". New Jersey: Wiley, 2003. Koleksi E-Book.