Tippett, L. H. C.
Williams and Norgate , 1952
Buku Teks
Plehn, Tilman
[Springer, ], 2012
eBooks
McClave, James T.
Dellen Publishing, 1979
Buku Teks
Hays, William Lee, 1926-1995
Harcourt Brace Colege, 1994
Buku Teks
McClave, James T.
Dellen Publishing, 1985
Buku Teks