Gradwohl, Judith, author
Yayasan Obor Indonesia, 1991
Buku Teks
Dones Rinaldi [and others]
TNGHS, 2008
Buku Referensi
edited by Helmut Lieth, M.J.A. Werger and David W. Goodall
Elsevier, 1992
Buku Teks
edited by F.B. Golley
Elsiver, 1983
Buku Referensi
Nichol, John, author
David & Charies, 1990
Buku Referensi