Jolly, Clifford J., author
McGraw-Hill, 1995
Buku Teks
by Robert Jurmain, Harry Nelson, Lynn Kilgore, Wenda Trevathan
Wadsworth, 2001
Buku Teks
Park, Michael Alan, author
Mayfield, 1995
Buku Teks
Park, Michael Alan, author
Mayfield , 2000
Buku Teks
Brace, C. Loring, author
Macmillan, 1969
Buku Teks