Lawson 2013, p. 25. Lawson, Emmanuel Olugbenga; Oloko, Rashidat Taiwo (2013). «Growth patterns, Sex ratios and Fecundity estimates in Blue Crab (Callinectes amnicola) from Yewa River, Southwest Nigeria». Advances in Life Science and Technology. 7. ISSN2225-062XA referência emprega parâmetros obsoletos |coautor= (ajuda)
