Downing, J. A., & Rigler, F. H. (1984). A manual on methods for the assessment of secondary productivity in fresh waters (2a. ed.). Blackwell Scientific.
Citazione stile Chigago Style (17a edizione)Downing, John A., e Frank H. Rigler. A Manual on Methods for the Assessment of Secondary Productivity in Fresh Waters. 2a. ed. Oxford: Blackwell Scientific, 1984.
Citatione MLA (9a ed.)Downing, John A., e Frank H. Rigler. A Manual on Methods for the Assessment of Secondary Productivity in Fresh Waters. 2a. ed. Blackwell Scientific, 1984.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.