APA Style
Bellamy, J.
(1982).
Digital Telephony / John Bellamy
(
1)
.
New York:
John Wiley & Sons.
MLA Style
Bellamy, John.
"Digital Telephony / John Bellamy".
1
New York:
John Wiley & Sons,
1982.
Textbook ห้องสมุดทั่วไป.