Zwaenepoel, P. P. (1977). Educational systems analysis: An interdisciplinary approach. s. n.
Cita Chicago (17th ed.)Zwaenepoel, Paul P. Educational Systems Analysis: An Interdisciplinary Approach. s. l: s. n, 1977.
Cita MLA (9th ed.)Zwaenepoel, Paul P. Educational Systems Analysis: An Interdisciplinary Approach. s. n, 1977.
Atenció: Aquestes cites poden no estar 100% correctes.