edited by Gianfranco Balbo and Marco Vaneschi
Edizioni ETS, 1995
Buku Teks
Gear, C. William (Charles William), 1935-, author
McGraw-Hill, 1981
Buku Teks
Pfleeger, Charles P., 1948-, author
John Wiley & Sons, 1982
Buku Teks
edited by Svetlana P. Kartashev and Steven I. Kartashev
Prentice-Hall, 1982
Buku Teks
Sabot, Gary W., author
MIT Press, 1988
Buku Teks