Chaudhuri, Arijit
Chapman and Hall/CRC, 2005
Buku Teks
Hansen, Morris H.
John Wiley & Sons, 1970
Buku Teks
Scheaffer, Richard L.
Brooks/Cole Cengage Learning, 2012
Buku Teks
Scheaffer, Richard L.
Duxbury , 1990 Press
Buku Teks
Schrock, Edward M.
Reinhold, 1961
Buku Teks