Cita APA (7a ed.)

Abt, C. C. (1980). Problems in American social policy research. Abt Books.

Cita Chicago Style (17a ed.)

Abt, Clark C. Problems in American Social Policy Research. Cambridge, Mass: Abt Books, 1980.

Cita MLA (9a ed.)

Abt, Clark C. Problems in American Social Policy Research. Abt Books, 1980.