Artikel Jurnal
Hadlington, P., author
New South Wales University Press, 1985
Buku Teks
Tanoko Prawira Sulistio, author
Fakultas Ilmu Pengetahuan dan Budaya Universitas Indonesia, 2018
UI - Skripsi (Membership)
Bambang Wijoyosatrio, author
1989
UI - Skripsi (Membership)
edited by M.M. Cameron and L.M. Lorenz
CABI, 2013
Buku Teks