Rostow, Walt Whitman, author
Harper & Row, 964.
Buku Teks
Sherwood, Lauralee, author
West Pub. , 1989
Buku Teks
Sherwood, Lauralee, author
Brooks/Cole, 2013
Buku Teks
Sherwood, Lauralee, author
Thomson Delmar Learning, 2004
Buku Teks
Sherwood, Lauralee, author
Brooks/Cole, 2010
Buku Teks