Jusuf Panglaykim, 1922-1986
Nanyang University , 1971
Buku Teks
Rarasati Prameswari Manoto
Fakultas Ekonomi dan Bisnis Universitas Indonesia, 2017
UI - Skripsi (Membership)
Wallace, Iain
Routledge , 1990
Buku Teks
edited by American Writing Corporation
The World Bank , 1996
Buku Teks
Bauchet, Pierre
Fredrick A. Praeger Published , 1964
Buku Teks