Derry, Gregory N.
Princeton University Press , 1999
Buku Teks
Reinfeld, Fred
Sterling Pub. Co, 1961
Buku Teks
edited by John Derrick
Springer-Verlag, 2012
eBooks
Chalmers, A.F.
University of Green Sland Press, 1982
Buku Teks
Ratzan, Lee
[American Library association, American Library association], 2004
eBooks