Reeves, R. R., & Whitehead, H. P. (1997). Status of the Sperm Whale, Physeter macrocephalus, in Canada. Zenodo.
Cita Chicago (17th ed.)Reeves, Randall R., i Hal P. Whitehead. Status of the Sperm Whale, Physeter Macrocephalus, in Canada. Zenodo, 1997.
Cita MLA (9th ed.)Reeves, Randall R., i Hal P. Whitehead. Status of the Sperm Whale, Physeter Macrocephalus, in Canada. Zenodo, 1997.
Atenció: Aquestes cites poden no estar 100% correctes.