APA (7th ed.) Citation

Hewitt, C., & De Jong, P. (1983). Analyzing the roles of descriptions and actions in open systems.

Chicago Style (17th ed.) Citation

Hewitt, Carl, and Peter De Jong. Analyzing the Roles of Descriptions and Actions in Open Systems. Cambridge, Mass, 1983.

MLA (9th ed.) Citation

Hewitt, Carl, and Peter De Jong. Analyzing the Roles of Descriptions and Actions in Open Systems. 1983.