APA (7th ed.) Citation

Hemmendinger, D. (2014). Messaging in the early SDC time-sharing system.

Chicago Style (17th ed.) Citation

Hemmendinger, David. Messaging in the Early SDC Time-sharing System. 2014.

MLA (9th ed.) Citation

Hemmendinger, David. Messaging in the Early SDC Time-sharing System. 2014.

Warning: These citations may not always be 100% accurate.