Wilson, A.G., author
John Wiley & Sons, 1981
Buku Teks
Hudson, Ray, author
Prentice-Hall, 2000
Buku Teks
Hudson, Ray, author
Prentice-Hall, 2000
Buku Teks
Gregor, Howard F., author
Van Nostrand Reinhold, 1963
Buku Teks
Getis, Arthur, author
McGraw-Hill Higher Education, 2009
Buku Teks