Burkhardt, E. (2012). Whale sightings during POLARSTERN cruise ANT-XXVII/4. PANGAEA.
Citazione stile Chigago Style (17a edizione)Burkhardt, Elke. Whale Sightings During POLARSTERN Cruise ANT-XXVII/4. PANGAEA, 2012.
Citatione MLA (9a ed.)Burkhardt, Elke. Whale Sightings During POLARSTERN Cruise ANT-XXVII/4. PANGAEA, 2012.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.