Bateman, Alan M., author
Charles E. Tuttle, 1960
Buku Teks
United Nations. Economic and Social Commission for Asia and the Pacific.
United Nations, 1991
Buku Referensi
United Nations, 1993
Buku Teks
Januarista Amartya Dyasti, author
Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Indonesia, 2022
UI - Skripsi (Membership)
Sobczyk, Eugeniusz J., author
Taylor and Francis, 2008
Buku Teks