APA (7e ed.) Bronvermelding

Obioh, G. I. B., & Isichei, A. O. (2014). Specprof: A Tool for Biological Indexing. Nigerian Conservation Foundation (NCF).

Chicago (17e ed.) Bronvermelding

Obioh, Gloria I. B., en Augustine O. Isichei. Specprof: A Tool for Biological Indexing. Nigerian Conservation Foundation (NCF), 2014.

MLA (9e ed.) Bronvermelding

Obioh, Gloria I. B., en Augustine O. Isichei. Specprof: A Tool for Biological Indexing. Nigerian Conservation Foundation (NCF), 2014.