Παραπομπή σε μορφή APA (7η εκδ.)

Singapore. Centre for Liveable Cities & Singapore. National Environmental Agency. (2013). Sustainable environment: Balancing growth with the environment. Cengage Learning Asia Pte Ltd.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Singapore. Centre for Liveable Cities και Singapore. National Environmental Agency. Sustainable Environment: Balancing Growth with the Environment. Singapore: Cengage Learning Asia Pte Ltd, 2013.

Παραπομπή σε μορφή MLA (9th εκδ.)

Singapore. Centre for Liveable Cities και Singapore. National Environmental Agency. Sustainable Environment: Balancing Growth with the Environment. Cengage Learning Asia Pte Ltd, 2013.