Artikel Jurnal
edited by William H. Allaway
Westview Press, 1985
Buku Teks
Universitas Indonesia, 2016
Buku Teks
Wiranda G. Piliang, Lukman Rahardja, editor
Life Science Inter University Center, Faculty of Graduate Studies, Bogor Agricultural University, 1990
Buku Referensi
Mortman, Doris
IVY Books, 1996
Buku Teks