APA
Black M., . (1990). From handpumps to health: The evolution of water and sanitation programmes in Bangladesh, India and Nigeria. New York: United Nations Children's Fund.
Chicago
Black Maggie, . 1990. From handpumps to health: The evolution of water and sanitation programmes in Bangladesh, India and Nigeria. New York: United Nations Children's Fund.
Harvard
Black M., . (1990). From handpumps to health: The evolution of water and sanitation programmes in Bangladesh, India and Nigeria. New York: United Nations Children's Fund.
MLA
Black Maggie, . From handpumps to health: The evolution of water and sanitation programmes in Bangladesh, India and Nigeria. New York: United Nations Children's Fund. 1990.