APA (7th ed.) Citation

Leipert, C., & Simonis, U. E. (1981). Social indicators in development planning.

Chicago Style (17th ed.) Citation

Leipert, Christian, and Udo E. Simonis. Social Indicators in Development Planning. Berlin, 1981.

MLA (9th ed.) Citation

Leipert, Christian, and Udo E. Simonis. Social Indicators in Development Planning. 1981.