Cita APA (7a ed.)

von Westernhagen, H., & Hickel, W. (1999). Hydrochemistry and phytoplankton abundance at time series station Helgoland Roads, North Sea, in 1981. PANGAEA.

Cita Chicago Style (17a ed.)

von Westernhagen, Hein, y Wolfgang Hickel. Hydrochemistry and Phytoplankton Abundance at Time Series Station Helgoland Roads, North Sea, in 1981. PANGAEA, 1999.

Cita MLA (9a ed.)

von Westernhagen, Hein, y Wolfgang Hickel. Hydrochemistry and Phytoplankton Abundance at Time Series Station Helgoland Roads, North Sea, in 1981. PANGAEA, 1999.