APA

Ramirez-Gil H., Feldberg E., Almeida-Val V. M. & Val A. L. (19990428). Karyological, biochemical, and physiological aspects of Callophysus macropterus (Siluriformes, Pimelodidae) from the Solimões and Negro Rivers (central Amazon). : Brazilian journal of medical and biological research = Revista brasileira de pesquisas medicas e biologicas.

Chicago

Ramirez-Gil H, Feldberg E, Almeida-Val V M and Val A L. 19990428. Karyological, biochemical, and physiological aspects of Callophysus macropterus (Siluriformes, Pimelodidae) from the Solimões and Negro Rivers (central Amazon). : Brazilian journal of medical and biological research = Revista brasileira de pesquisas medicas e biologicas.

Harvard

Ramirez-Gil H., Feldberg E., Almeida-Val V. M. and Val A. L. (19990428). Karyological, biochemical, and physiological aspects of Callophysus macropterus (Siluriformes, Pimelodidae) from the Solimões and Negro Rivers (central Amazon). : Brazilian journal of medical and biological research = Revista brasileira de pesquisas medicas e biologicas.

MLA

Ramirez-Gil H, Feldberg E, Almeida-Val V M and Val A L. Karyological, biochemical, and physiological aspects of Callophysus macropterus (Siluriformes, Pimelodidae) from the Solimões and Negro Rivers (central Amazon). : Brazilian journal of medical and biological research = Revista brasileira de pesquisas medicas e biologicas. 19990428.