Barbara Kroll, editor
Cambridge University Press, 2003
Buku Teks
edited by James Flood, Julie M. Jensen, Diane Lapp, James R. Squire
Macmillan, 1991
Buku Referensi
Soedarsono
Gunung Agung, 1974
Buku Teks
Simatupang, R. O.
Yayasan Prapanja, 1962
Buku Teks
Bonset, Helge
Coutinho, 1992
Buku Teks