Newby, Michael
Cambridge University Press, 1988
Buku Teks
Wolfram, Walt, 1941-
Wiley Balckwell, 2016
Buku Teks
Pike, Kenneth L. (Kenneth Lee), 1912-2000
University of Michigan Press, 1945
Buku Teks
Walters, Morgan L
N.Y.Holt Rinehart and Winston,inc, 1966
Buku Teks
Walters, Margan L
N.Y.Holt,Rinehart and winston,ic, 1966
Buku Teks