Whenever you publish research or applications based on these gridded data products, you should include the following acknowledgement and citations.
SAAC-OBS temperature and precipitation:
"We acknowledge the SA-OBS dataset and the data providers in the SACA&D project (http://saca-bmkg.knmi.nl)"
"Else J.M. van den Besselaar, Gerard van der Schrier, Albert M.G. Klein Tank, Richard Cornes, Aris Suwondo and Iqbal. 2016: SA-OBS: a daily gridded surface temperature and precipitation dataset for Southeast Asia. In preparation"