Cita APA (7a ed.)

Silva S, N., Helbling, E. W., Villafañe, V. E., Amos, A. F., & Holm-Hansen, O. (1995). Variability in nutrient concentrations around elephant island, antarctica, during 1991-1993. Nosrk-Polarinstitutt.

Cita Chicago Style (17a ed.)

Silva S, Nelson, E Walter Helbling, Virginia E. Villafañe, Anthony F. Amos, y O. Holm-Hansen. Variability in Nutrient Concentrations Around Elephant Island, Antarctica, During 1991-1993. Valparaiso: Nosrk-Polarinstitutt, 1995.

Cita MLA (8a ed.)

Silva S, Nelson, et al. Variability in Nutrient Concentrations Around Elephant Island, Antarctica, During 1991-1993. Nosrk-Polarinstitutt, 1995.