Cita APA

National Geographic Society, Washington, D.C, Agaton, M., Bruce, C. L., Olsson, M. O., & Sandell, T. (1988). Our immune system [videorecording]. The Society in association with Sandell & Sons.

Citación estilo Chicago

National Geographic Society, Washington, D.C, Michael Agaton, Constance L. Bruce, Mats Olof Olsson, and Thore Sandell. Our Immune System [videorecording]. Washington, D.C: The Society in association with Sandell & Sons, 1988.

Cita MLA

National Geographic Society, Washington, D.C, et al. Our Immune System [videorecording]. The Society in association with Sandell & Sons, 1988.