Cita APA (7a ed.)

Dummett, P., Lansford, L., Stephenson, H., Richardson, K., Hird, J., Millin, S., . . . Hall, D. (2016). Keynote: Proficient. National Geographic Learning.

Cita Chicago Style (17a ed.)

Dummett, Paul, Lewis Lansford, Helen Stephenson, Karen Richardson, Jon Hird, Sandy Millin, Mike Harrison, y Diane Hall. Keynote: Proficient. Andover: National Geographic Learning, 2016.

Cita MLA (9a ed.)

Dummett, Paul, et al. Keynote: Proficient. National Geographic Learning, 2016.