Gaya APA

Watkins, R. et al (2012). A guide to assessing needs : essential tools for collecting information, making decisions, and achieving development results . Washington, D.C.: Washington DC.The World Bank.

Gaya MLA

Watkins, Ryan. et al. "A guide to assessing needs : essential tools for collecting information, making decisions, and achieving development results". Washington, D.C.: Washington DC.The World Bank, 2012. Koleksi World Bank.