Jackson, V. W. (1935). The Little Black Bullhead (Ameiurus melas) as an Aquarium Fish. Zenodo.
Cita Chicago (17th ed.)Jackson, V. W. The Little Black Bullhead (Ameiurus Melas) as an Aquarium Fish. Zenodo, 1935.
Cita MLA (9th ed.)Jackson, V. W. The Little Black Bullhead (Ameiurus Melas) as an Aquarium Fish. Zenodo, 1935.
Atenció: Aquestes cites poden no estar 100% correctes.