APA
World Health Organization G., . (1987). Improving environmental health conditions in low-income settlements. Delhi: B.R. Publishing Corporation.
Chicago
World Health Organization Geneva, . 1987. Improving environmental health conditions in low-income settlements. Delhi: B.R. Publishing Corporation.
Harvard
World Health Organization G., . (1987). Improving environmental health conditions in low-income settlements. Delhi: B.R. Publishing Corporation.
MLA
World Health Organization Geneva, . Improving environmental health conditions in low-income settlements. Delhi: B.R. Publishing Corporation. 1987.