Schwartz, Bernard
Little, Brown & Co., 1991
Buku Teks SO
Schwartz, Bernard
Little, Brown & Co., 1976
Buku Teks SO
Schwartz, Bernard
Little, Brown & Co., 1988
Buku Teks
Schwartz, Bernard
Little, Brown & Co., 1977
Buku Teks
Lorch, Robert S.
Wayne State University Press, 1969
Buku Teks SO