APA (7th ed.) Citation

Gessford, J. E. (1980). Modern Information Systems: Designed for decison support. Addison-Wesley.

Chicago Style (17th ed.) Citation

Gessford, John E. Modern Information Systems: Designed for Decison Support. Reading, Mass: Addison-Wesley, 1980.

MLA (9th ed.) Citation

Gessford, John E. Modern Information Systems: Designed for Decison Support. Addison-Wesley, 1980.

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