Flanders, Harley
Academic Press, 1975
Buku Teks SO
Lang, Serge, 1927-2005
Addison-Wesley, 1974
Buku Teks SO
Brumfiel, Charles Francis, 1914-
Addison-Wesley, 1962
Buku Teks SO
Gaughan, Edward
Brooks/Cole, 1970
Buku Teks SO
Stevens, Lee A.
Wadsworth, 1970
Buku Teks SO