@book{greenery2018guidelines, title = {GUIDELINES ON GREENERY PROVISION AND TREE CONSERVATION FOR DEVELOPMENTS} author = {Greenery & Development Planning Branch National Parks Board}, url = {https://www.nparks.gov.sg/-/media/nparks-real-content/partner-us/developers-architects-and-engineers/gdp-handbook-2018-apr-3.pdf}, year = {2018} }