Ford, Richard, author
Vintage Contemporaries Vintage Books, 2001
Buku Teks
Kotler
Buku Teks
Belliotti, Raymond A., author
Wiley-Blackwell, 2014
Buku Teks
edited by Niels Valdemar Vinding, Egdunas Racius, Jorn Thielmann
Brill, 2018
eBooks
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