Harper, Laura J., author
UI-Press, 2009
Buku Teks
Harper, Laura J., author
UI-Press, 1986
Buku Teks
Harper, Laura J., author
UI - Press, 2009
Buku Teks
Harper, Laura J., author
Penerbit Universitas Indonesia (UI-Press), 2009
Buku Teks
Pemerintah RI, 2000
Buku Teks