Tanner, O., & Graves, E. Bears and Other Carnivores: Wild, Wild World Animal. Times-Life Films.
Cita Chicago (17th ed.)Tanner, Ogden, i Eleanor Graves. Bears and Other Carnivores: Wild, Wild World Animal. [New York]: Times-Life Films.
Cita MLA (9th ed.)Tanner, Ogden, i Eleanor Graves. Bears and Other Carnivores: Wild, Wild World Animal. Times-Life Films.
Atenció: Aquestes cites poden no estar 100% correctes.