Ero, I. I., & Sanford, W. W. (2014). Guinea Savanna Structure and Land-use in Northwestern Nigeria. Obafemi Awolowo University.
Lua i Stíl Chicago (17ú heag.)Ero, Isaac Izogie, agus W. W. Sanford. Guinea Savanna Structure and Land-use in Northwestern Nigeria. Obafemi Awolowo University, 2014.
Lua MLA (9ú heag.)Ero, Isaac Izogie, agus W. W. Sanford. Guinea Savanna Structure and Land-use in Northwestern Nigeria. Obafemi Awolowo University, 2014.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.