Batten,T.R.
Oxford University Press , 1970
Buku Teks
Doxiadis, C. A.
Tata McGraw-Hill, 1976
Buku Teks
F.E. Paecock Publishers, Inc., 1973
Buku Teks
Corey, Gerald
Brooks/Cole, Cengage Learning, 2012
Buku Teks
Corey, Marianne Schneider
Thomson/Brooks/Cole, 2006
Buku Teks