UNITED NATION. (1972). GUIDELINES FOR PROJECT EVALUATION. OXFORD & IBH PUBLISHING CO.
Cita Chicago (17th ed.)UNITED NATION. GUIDELINES FOR PROJECT EVALUATION. NEW DELHI: OXFORD & IBH PUBLISHING CO, 1972.
Cita MLA (9th ed.)UNITED NATION. GUIDELINES FOR PROJECT EVALUATION. OXFORD & IBH PUBLISHING CO, 1972.
Atenció: Aquestes cites poden no estar 100% correctes.