Procurement
SDG 12 target 12.7 is to "Promote public procurement practices that are sustainable, in accordance with national policies and priorities, " The indicator is the "Number of countries implementing sustainable public procurement policies and action plans ."
General
ASCE Policy 400 Design Build Procurement https://www.asce.org/issues-and-advocacy/public-policy/policy-statement-400---design-build-procurement/
ASCE Policy 456 Incentives for Implementing Construction Innovation https://www.asce.org/issues-and-advocacy/public-policy/policy-statement-456---incentives-for-implementing-construction-innovation/
Australasian Procurement and Construction Council Inc (APCC) https://www.apcc.gov.au/
Australia Sustainable Procurement Guide http://www.environment.gov.au/protection/waste-resource-recovery/publications/sustainable-procurement-guide
BSR (Business for Social Responsibility) New Models for Sustainable Procurement https://www.bsr.org/en/our-insights/report-view/new-models-for-sustainable-procurement
ICE Sustainable Infrastructure: Principles and Practices Chapter 2 https://www.icevirtuallibrary.com/doi/full/10.1680/sipp.57548.121
IISD Public Procurement and Infrastructure Finance https://www.iisd.org/topic/public-procurement-and-infrastructure-finance
IISD and Chatham House The Role of Public Procurement in Deploying Sustainable Infrastructure https://www.iisd.org/sites/default/files/publications/role-public-procurement-deploying-sustainable-Infrastructure.pdf
Sustainable Procurement in the Canadian Construction Industry abstract and references only http://www.nrcresearchpress.com/doi/abs/10.1139/cjce-2014-0376#.XFXBmuHYo3F
UN Procurement Practitioner's Handbook https://www.ungm.org/Areas/Public/pph/index.html
UNDP Sustainable Procurement http://www.undp.org/content/undp/en/home/procurement/sustainable-procurement.html
UNOPS Procurement https://www.unops.org/expertise/procurement
USEPA Comprehensive Procurement Guideline Program https://www.epa.gov/smm/comprehensive-procurement-guideline-cpg-program
USDOD Sustainable Procurement https://www.denix.osd.mil/spc/procurement/home/
USDOT Green Procurement Guide https://www.fhwa.dot.gov/legsregs/directives/orders/gppg041910.htm