APA

Safaa Abd El halem Mahmoud, Abdelkhalek Morad Selim, Mohammed Elnaggar & Saad Abd El hafeez Taha. (2001). Transformations of combined nitrogensulphur fertilizers in the soil and their effect on the absorption of certain nutritional elements by plant. Cairo: Safaa Abd El halem Mahmoud.

Chicago

Safaa Abd El halem Mahmoud, Abdelkhalek Morad Selim, Mohammed Elnaggar and Saad Abd El hafeez Taha. 2001. Transformations of combined nitrogensulphur fertilizers in the soil and their effect on the absorption of certain nutritional elements by plant. Cairo: Safaa Abd El halem Mahmoud.

Harvard

Safaa Abd El halem Mahmoud, Abdelkhalek Morad Selim, Mohammed Elnaggar and Saad Abd El hafeez Taha. (2001). Transformations of combined nitrogensulphur fertilizers in the soil and their effect on the absorption of certain nutritional elements by plant. Cairo: Safaa Abd El halem Mahmoud.

MLA

Safaa Abd El halem Mahmoud, Abdelkhalek Morad Selim, Mohammed Elnaggar and Saad Abd El hafeez Taha. Transformations of combined nitrogensulphur fertilizers in the soil and their effect on the absorption of certain nutritional elements by plant. Cairo: Safaa Abd El halem Mahmoud. 2001.