Kemp, Brenda B.
Little, Brown & Co., 1984
Buku Teks
Goodman, Benny
Learning matters Ltd., 2008
Buku Teks
Dewi Kusuma Mayasari
1986
UI - Skripsi (Membership)
Levoy, Robert P.
Rajawali , 1986
Buku Teks
Agustina Harsamin
Universitas Indonesia, 1995
UI - Tesis (Membership)