Gaya APA

al.], A, A, [. (2015). Response of some wheat varieties to irrigation and nitrogen fertilization using ammonia gas in North Nile Delta region . : Elsevier.

Gaya MLA

al.], A.A., Abdelkhalek, [et. "Response of some wheat varieties to irrigation and nitrogen fertilization using ammonia gas in North Nile Delta region". : Elsevier, 2015. e-journal.