APA

Helfman G. S., Collette B. B. . & Facey D. E. . (1997). The diversity of fishes. E.U.A: Blackwell Science.

Chicago

Helfman Gene S, Collette Bruce B and Facey Douglas E. 1997. The diversity of fishes. E.U.A: Blackwell Science.

Harvard

Helfman G. S., Collette B. B. . and Facey D. E. . (1997). The diversity of fishes. E.U.A: Blackwell Science.

MLA

Helfman Gene S, Collette Bruce B and Facey Douglas E. The diversity of fishes. E.U.A: Blackwell Science. 1997.