Laws, S., Harper, C., & Marcus, R. (2003). Research for development: A practical guide. SAGE : Vistaar publications.
Lua i Stíl Chicago (17ú heag.)Laws, Sophie, Caroline Harper, agus Rachel Marcus. Research for Development: A Practical Guide. London ; Thousand Oaks, Calif. ; New Delhi: SAGE : Vistaar publications, 2003.
Lua MLA (8ú heag.)Laws, Sophie, et al. Research for Development: A Practical Guide. SAGE : Vistaar publications, 2003.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.