Gaya APA

Putman, B, W. (1987). RS-232 Simplified : Everything You Need To Know About Connecting, Interfacing And Troubleshooting Peripheral Devices . New Jersey: Prentice Hall.

Gaya MLA

Putman, Byron, W. "RS-232 Simplified : Everything You Need To Know About Connecting, Interfacing And Troubleshooting Peripheral Devices". New Jersey: Prentice Hall, 1987. Text.