Burkhardt, E. (2009). Whale sightings during POLARSTERN cruise ANT-XXV/5. PANGAEA.
Cita Chicago Style (17a ed.)Burkhardt, Elke. Whale Sightings During POLARSTERN Cruise ANT-XXV/5. PANGAEA, 2009.
Cita MLA (9a ed.)Burkhardt, Elke. Whale Sightings During POLARSTERN Cruise ANT-XXV/5. PANGAEA, 2009.
Precaución: Estas citas no son 100% exactas.