Robert, A. Hood
Mouton, 1965
Buku Teks
Bate, Simon T., 1975-, author
Cambridge University Press , 2014
Buku Teks
Mather, Kennneth
Chapman & Hall and Science , 1972
Buku Teks
Afifi, A.A. author
Academic Press, 1979
Buku Teks
Liteanu, Candin, author
Ellis Horwood, 1980
Buku Teks