Cita APA (7a ed.)

Nagel, S. S., & Nagel, S. S. (1975). Policy studies and the social sciences. Policy Studies Organization series.

Cita Chicago Style (17a ed.)

Nagel, Stuart S., y Stuart S. Nagel. "Policy Studies and the Social Sciences." Policy Studies Organization Series 1975.

Cita MLA (8a ed.)

Nagel, Stuart S., y Stuart S. Nagel. "Policy Studies and the Social Sciences." Policy Studies Organization Series, 1975.