Departemen Luar Negeri RI
Department of Foreign Affairs, Republic of Indonesia, 1961-1962
Buku Teks
Porter, Hal, 1911-1984, author
Angus & Robertson, [Date of publication not identified]
Buku Teks
Dominicus Ezra Narendratmaja Bhaskara, author
Fakultas Ilmu Pengetahuan Budaya Universitas Indonesia, 2023
UI - Tugas Akhir
edited by Ernest K. Lindley
Beacon Press, 1963
Buku Teks
Koster, Ben, author
Anthos, 1991
Buku Teks