Lua APA (7ú heag.)
Okorie, J. U. (1986). Agriculture science for teacher training colleges. Longman.
Lua i Stíl Chicago (17ú heag.)
Okorie, J U. Agriculture Science for Teacher Training Colleges. England: Longman, 1986.
Lua MLA (9ú heag.)
Okorie, J U. Agriculture Science for Teacher Training Colleges. Longman, 1986.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.