| Author/time | Definition |
| Johansson [22] | Clients, owners, contractors, designers, suppliers, financial organizations, government, researchers, and surrounding people | Zhou and Yang [23] | Clients, consultants, contractors, subcontractors/suppliers, end-users, financial organizations, government, environmental protection organizations, professional associations, media, the public, trade unions, evaluators/certifiers, and researchers/educators | Davis [24] | Government, financiers, developers, consultants, suppliers, designers, owners, supervisors, contractors, subcontractors, and end-users | Yang and Shen [25] | Clients, contractors, consultants, suppliers, end-users, governments, financiers/sponsors, communities, district councils, the general public, competitors, utilities, special interest groups, and the media | Mok et al. [14] | Clients, consultants, the main contractor, engineers, subcontractors, end-users, and others |
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