Roberts, N. (1977). Use of social sciences literature. Butterworths.
Cita Chicago (17th ed.)Roberts, N. Use of Social Sciences Literature. London,: Butterworths, 1977.
Cita MLA (9th ed.)Roberts, N. Use of Social Sciences Literature. Butterworths, 1977.
Atenció: Aquestes cites poden no estar 100% correctes.