APA način citiranja

Olatunji Ayotunde,, E., Obeten Offem, B., & Bekeh Ada, F. (2012). Heavy metal profile of water, sediment and freshwater cat fish, Chrysichthys nigrodigitatus (Siluriformes: Bagridae), of Cross River, Nigeria.

Čikaški stil citiranja

Olatunji Ayotunde,, Ezekiel, Benedict Obeten Offem, i Fidelis Bekeh Ada. Heavy Metal Profile of Water, Sediment and Freshwater Cat Fish, Chrysichthys Nigrodigitatus (Siluriformes: Bagridae), of Cross River, Nigeria. 2012.

MLA način citiranja

Olatunji Ayotunde,, Ezekiel, Benedict Obeten Offem, i Fidelis Bekeh Ada. Heavy Metal Profile of Water, Sediment and Freshwater Cat Fish, Chrysichthys Nigrodigitatus (Siluriformes: Bagridae), of Cross River, Nigeria. 2012.