Gunardi Barkah Raharjo
Fakultas Ilmu Pengetahuan Budaya Universitas Indonesia, 2021
UI - Tugas Akhir
Rives, James B.
Blackwell, 2007
Buku Teks
Shearston, Trevor
University of Queensland Press, 1979
Buku Teks SO
Brahm, Laurence J.
China Intercontinental Press, 2008
Buku Referensi
De, Serville Paul
Oxford University Press, 1980
Buku Teks SO