Gaya APA
Heller, R. (2001).
Jack Welch : the corporate icon who created the worlds most valuable company .
London:
A Dorling Kindersley Book.
Gaya MLA
Heller, Robert.
"Jack Welch : the corporate icon who created the worlds most valuable company".
London:
A Dorling Kindersley Book,
2001.
Buku.