Singh, P. (1995). Holistic approach to sustainable development. M.D. Publication PVT.
Chicago (17e ed.) BronvermeldingSingh, Pramod. Holistic Approach to Sustainable Development. New Delhi: M.D. Publication PVT, 1995.
MLA (9e ed.) BronvermeldingSingh, Pramod. Holistic Approach to Sustainable Development. M.D. Publication PVT, 1995.
Let op: Deze citaties zijn niet altijd 100% accuraat.