Strete, Dennis, author
McGraw-Hill, 2012
Buku Teks
Perry, James W.
Wadsworth, 1996
Buku Referensi
Roland, Jean-Claude
Little, Brown and Company, 1977
Buku Referensi
Johnson, Willis H., author
Holt, Rinehart and Winston, 1961
Buku Teks
Johnson, Willis H., author
Holt, Rinehart and Winston, 1961
Buku Teks