Hsu, J. (1989). Guide to commercial telecommunications services. Prentice Hall.
Citación estilo ChicagoHsu, Jeffrey. Guide to Commercial Telecommunications Services. Englewood Cliffs, N.J: Prentice Hall, 1989.
Cita MLAHsu, Jeffrey. Guide to Commercial Telecommunications Services. Prentice Hall, 1989.
Warning: These citations may not always be 100% accurate.