Hewett, Dorothy, author
Currency Press, 1976
Buku Teks
Sandoz, Mari
University of Nesbraska Press, 1958
Buku Teks
Muslichah Syukri, author
Fakultas Ilmu Pengetahuan dan Budaya Universitas Indonesia, 1981
UI - Skripsi (Membership)
Miller, Richard A., author
Williams & Wilkins, 1982
Buku Teks
REC, 1968
Buku Teks