Artikel Jurnal
Dryden Press, 1951
Buku Teks
Danar Hafidz Adi Wardhana
Sekolah Kajian Stratejik dan Global Universitas Indonesia, 2021
UI - Tesis (Membership)
Skidmore, Thomas E.
Oxford University press, 2007
Buku Teks
Brazilian Academy of Science , 1999
Buku Teks