Dyfyniad APA

Bums, J. R., & Ramirez, M. A. (1990). Annual pattern of reproduction of the bagre, Arius guatemalensis (Pisces: Ariid.

Dyfyniad Arddull Chicago

Bums, John R., y Miguel A. Ramirez. Annual Pattern of Reproduction of the Bagre, Arius Guatemalensis (Pisces: Ariid. 1990.

Dyfyniad MLA

Bums, John R., y Miguel A. Ramirez. Annual Pattern of Reproduction of the Bagre, Arius Guatemalensis (Pisces: Ariid. 1990.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.