Savage, I. Richard, author
Houghton Mifflin, 1968
Buku Teks
edited by M.B. Beck and G. van Straten
Springer-Verlag, 1983
Buku Teks
McKenna, C.J.
Wheatsheaf book Ltd, 1986
Buku Teks
Savage, I. Richard, author
Houghton Mifflin, 1968
Buku Teks
Kluwer Academic Publishers, 2018
Majalah, Jurnal, Buletin