Clowers, Myles L., author
McGraw-Hill, 1977
Buku Teks
Clowers, Myles L., author
McGraw-Hill, 1973
Buku Teks
MacQueen, Donald R.
Addison-Wesley, 1973
Buku Teks
Persell, Caroline Hodges, author
Harper & Row, 1984
Buku Teks
Layder, Derek
Sage, 1994
Buku Teks