Harvey, Edwin R.
UNESCO, 1979
Buku Teks
Lapegna, Pablo, author
Oxford University Press, 2016
eBooks
Alfred A. Knopf, 1968
Buku Teks
Ruiz Moreno, Isidoro J., 1934-
Emecé Editores, 1997
Buku Teks
Garda Sembiring, Bonnie Triyana, Bambang Agung, editor; Suma Mihardja, translator
Peoples Empowerment Consortium (PEC), 2007
Buku Teks