Cita APA (7a ed.)

Villafañe, V. E., Helbling, E. W., & Holm-Hansen, O. (1993). Phytoplankton around elephant island, antarctica: Distribution, biomass and composition. University of California. Institution of Oceanography.

Cita Chicago Style (17a ed.)

Villafañe, Virginia E., E Walter Helbling, y O. Holm-Hansen. Phytoplankton Around Elephant Island, Antarctica: Distribution, Biomass and Composition. San Diego: University of California. Institution of Oceanography, 1993.

Cita MLA (8a ed.)

Villafañe, Virginia E., et al. Phytoplankton Around Elephant Island, Antarctica: Distribution, Biomass and Composition. University of California. Institution of Oceanography, 1993.