Lejk, M. (1998). An introduction to systems analysis techniques. London: Prentice-Hall.
Style de citation ChicagoLejk, Mark. An Introduction to Systems Analysis Techniques. London: Prentice-Hall, 1998.
Style de citation MLALejk, Mark. An Introduction to Systems Analysis Techniques. London: Prentice-Hall, 1998.
Attention : ces citations peuvent ne pas être correctes à 100%.