APA (7 ম সংস্করণ) উদ্ধৃতি

Isichei, A. O. (2014). Nitrogen Concentration in the Major Grasses of the Derived and Guinea Savanna Zones of Nigeria in Relation to Season and Site.

শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতি

Isichei, Augustine O. Nitrogen Concentration in the Major Grasses of the Derived and Guinea Savanna Zones of Nigeria in Relation to Season and Site. 2014.

M.L.A (9 ম সংস্করণ) উদ্ধৃতি

Isichei, Augustine O. Nitrogen Concentration in the Major Grasses of the Derived and Guinea Savanna Zones of Nigeria in Relation to Season and Site. 2014.