Gaya APA

Bruton, G, D., Bamford, C, E. (2011). Entrepreneurship : A Small Business Approach . Amerika: Mc Graw-Hill.

Gaya MLA

Bruton, Garry, D.., Bamford, Charles, E.. "Entrepreneurship : A Small Business Approach". Amerika: Mc Graw-Hill, 2011. BUKU.