Behn, Robert D., author
Basic Books, 1982
Buku Teks
Eden, Colin, author
Macmillan, 1975
Buku Teks
Bunn, Derek W., author
McGraw-Hill, 1984
Buku Teks
edited by Anthony G. McGrew
Manchester University Press, 1985
Buku Teks
Raiffa, Howard, 1924-2016, author
Addison-Wesley, 1970
Buku Teks SO