Fraser-Tytler, W.K.
Oxford University Press, 1950
Buku Teks
Belenistsky, Aleksandr, author
The World Publishing, 1968
Buku Teks
Catherine, author
Fakultas Ilmu Komputer Universitas Indonesia , 2020
UI - Tugas Akhir
edited by, Garry Rodan
Routledge, 1996
Buku Teks
editors, Robert E. Ward and Roy C. Macridis
Prentice-Hall, 1963
Buku Teks