APA引文

Gurmel Singh. (1990). mannual of soil and water conseervation Practices. Oxford and IBH publishing.

Chicago Edition Citation

Gurmel Singh. Mannual of Soil and Water Conseervation Practices. New Delhi: Oxford and IBH publishing, 1990.

MLA引文

Gurmel Singh. Mannual of Soil and Water Conseervation Practices. Oxford and IBH publishing, 1990.

警告：这些引文格式不一定是100％准确.