Gail Maria Hardy, author
1995
UI - Tesis (Membership)
Yustriana Pardewi, author
1990
UI - Skripsi (Membership)
Sumarsono, author
Departemen Pendidikan dan Kebudayaan RI, 1995
Buku Teks
Universitas Indonesia, 1999
UI - Skripsi (Membership)
Simanjuntak, Ranto P, author
Universitas Indonesia, 2004
UI - Tesis (Membership)