Losee, Robert M. (Robert Maclean), 1952-, author
Academic Press, 1990
Buku Teks
Flynn, Roger R., author
M. Dekker, 1987
Buku Teks
Reitz, Joan M., author
Libraries Unlimited, 2004
Buku Referensi
Holler, Frederick L., author
ABC-Clio, 1981
Buku Teks
Artikel Jurnal