Vanderschmidt, L.

Vanderschmidt, L. & Lent, M., 1980. Systematic project design : a handbook for volunteers 4th ed.ᵉ éd., Boston, MA, USA: Boston University, Center for Educational Development in Health. Available at: https://fr.ircwash.org/sites/default/files/Vanderschmidt-1981-Systematic.pdf.