Gareis, R. &. O. (2013). Project management and sustanable development principles. Project management institute.
Citazione stile Chigago Style (17a edizione)Gareis, Ronald & Other. Project Management and Sustanable Development Principles. Pennsylvania: Project management institute, 2013.
Citatione MLA (9a ed.)Gareis, Ronald & Other. Project Management and Sustanable Development Principles. Project management institute, 2013.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.