Greene, William H., 1951-, author
Pearson Prentice Hall, 2012
Buku Teks
Spanos, Aris, author
Cambridge University Press, 1987
Buku Teks
Enders, Walter
John Wiley & Sons, 1995
Buku Teks
Brown, T. Merritt, author
Macmillan, 1970
Buku Teks
Pindyck, Robert S., author
Irwin McGraw-Hill, 1997
Buku Teks