Wright, F. B. (1969). Rural water supply and sanitation. Wiley Eastern.
Cita Chicago (17th ed.)Wright, Forrest B. Rural Water Supply and Sanitation. New Delhi: Wiley Eastern, 1969.
Cita MLA (9th ed.)Wright, Forrest B. Rural Water Supply and Sanitation. Wiley Eastern, 1969.
Atenció: Aquestes cites poden no estar 100% correctes.