The Indices of Social Development are compiled from various sources.
If you quote the Indices of Social development, please refer to as follows: Source: Indices of Social Development, URL: https://isd.iss.nl
Our resources page and this excel sheet lists the indicators with the data provider of the indicators.
If you do not use the indices but underlying indicators, you should also give the data provider as source.
To quote these, please reference as follows, for example: Adult Female Literacy Rate: Source: World Development Indicators, accessed at https://isd.iss.nl