Gaya APA
Walker, Gordon. (2007).
Modern Competitive Strategy .
Amerika:
Mc Graw-Hill.
Gaya Chicago
Walker, Gordon.
Modern Competitive Strategy.
Amerika:
Mc Graw-Hill,
2007.
Buku.
Gaya MLA
Walker, Gordon.
Modern Competitive Strategy.
Amerika:
Mc Graw-Hill,
2007.
Buku.
Gaya Turabian
Walker, Gordon.
Modern Competitive Strategy.
Amerika:
Mc Graw-Hill,
2007.
Buku.