T. Nadu - I. N. Board,
«Handpump caretaker training». Tamil Nadu Water and Drainage Board, Madras, India, p. 41 p. : ill.
P. H. E. D. Bhutan. Pu BT,
«Water caretaker's manual». Bhutan, Ministry of Health, Public Health Department, PHED, Thimphu, Bhutan, p. 44 p. : ill.