Cita APA (7a ed.)

Kellerher, G. (1970). The Challenge to systems analysis: Public policy and social change. John Wiley.

Cita Chicago Style (17a ed.)

Kellerher, Grace. The Challenge to Systems Analysis: Public Policy and Social Change. New York: John Wiley, 1970.

Cita MLA (8a ed.)

Kellerher, Grace. The Challenge to Systems Analysis: Public Policy and Social Change. John Wiley, 1970.