Obioh, G. I. B., & Isichei, A. O. (2014). Specprof: A Tool for Biological Indexing. Nigerian Conservation Foundation (NCF).
Chicago-čujuhus (17. p.)Obioh, Gloria I. B., juo Augustine O. Isichei. Specprof: A Tool for Biological Indexing. Nigerian Conservation Foundation (NCF), 2014.
MLA-čujuhus (9. p.)Obioh, Gloria I. B., juo Augustine O. Isichei. Specprof: A Tool for Biological Indexing. Nigerian Conservation Foundation (NCF), 2014.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.