APA (7 ম সংস্করণ) উদ্ধৃতি

(2009). Clean, Green and Blue: Singapore's Journey Towards Environmental and Water Sustainability. [s.n.].

শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতি

Clean, Green and Blue: Singapore's Journey Towards Environmental and Water Sustainability. [S.l.]: [s.n.], 2009.

M.L.A (9 ম সংস্করণ) উদ্ধৃতি

Clean, Green and Blue: Singapore's Journey Towards Environmental and Water Sustainability. [s.n.], 2009.