APA
Mann H. T., . (1987). Water treatment and sanitation. London: Intermediate Technology Publication.
Chicago
Mann H T, . 1987. Water treatment and sanitation. London: Intermediate Technology Publication.
Harvard
Mann H. T., . (1987). Water treatment and sanitation. London: Intermediate Technology Publication.
MLA
Mann H T, . Water treatment and sanitation. London: Intermediate Technology Publication. 1987.