Citazione APA

Gurmel, S., Sastry, G., & Venkataramanan, C. (1990). Manual of soil and wate conservation Practices. Oxford & IBH publishing co. pvt. ltd.

Stile di citazione Chicago

Gurmel, Singh, G. Sastry, e C. Venkataramanan. Manual of Soil and Wate Conservation Practices. New Delhi: Oxford & IBH publishing co. pvt. ltd, 1990.

Citazione MLA

Gurmel, Singh, et al. Manual of Soil and Wate Conservation Practices. Oxford & IBH publishing co. pvt. ltd, 1990.