Pillsbury, B.

Pillsbury, B., Bourne, P. & Yacoob, M., 1988. What makes hygiene education successful? : experience from Togo, Sri Lanka, and Yemen and its relevance for project design, (Wash technical report no. 55) Arlington, VA, USA: Water and Sanitation for Health Project (WASH). Available at: https://fr.ircwash.org/sites/default/files/203.2-4547.pdf.