Cita APA

Duggal, K. N. . .. (1995). Elements of public health engineering (4.). S.Chand and Co.

Chicago Edition Citation

Duggal, K N. Elements of Public Health Engineering. 4. New Delhi: S.Chand and Co, 1995.

Cita MLA

Duggal, K N. Elements of Public Health Engineering. 4. S.Chand and Co, 1995.