Hoel, Paul Gerhard, 1905-, author
John Wiley & Sons, 1962
Buku Teks
Gibilisco, Stan, 1953-, author
McGraw-Hill, 2011
Buku Teks
Runyon, Richard P., author
Ill. Richard D. Irwin , 1982
Buku Teks
Thurtone, L.L., author
Macmillan, 1925
Buku Teks
Wallis, W. Allen, author
The Free Press, 1966
Buku Teks