Cambridge University Press, 2019
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Siwage Dharma Negara
Fakultas Ekonomi dan Bisnis Universitas Indonesia, 2000
UI - Tesis Membership
Shin, Eui-soon
Yonsei University Press, 2004
Buku Teks
IEA Publications, 2008
Buku Teks
Dorf, Richard C.
Addison-Wesley, 1978
Buku Teks SO