Fakultas Ekonomi dan Bisnis Universitas Indonesia, 2014
UI - Skripsi (Membership)
Smirnova, Engelina, author
Leningrad, Aurora Art Publishers
Buku Referensi
Kim, Myong-suk, author
Foreign Languages Pub. House, 2014
Buku Teks
Ha, Tae Hung, author
Yonsei University Press, 1962
Buku Teks
Lechevalier, Hubert A., author
Dover 1974, 1974
Buku Teks