Thomas, R. Murray (Robert Murray), 1921-, author
Bergin & Garvey, 2000
Buku Teks
Maimon, Elaine P., author
McGraw-Hill , 2003
Buku Referensi
Harris, Robert A., author
Pyrczak Pub, 2011
Buku Teks
Adams, Katherine H., author
Mayfield Publishing Company, 2000
Buku Teks
Garson, G. David, author
Marcel Dekker, 2002
Buku Referensi