APA citiranje

Cooper, A. E., Cooper, E. A., & Heward, J. A. (1919). On the Self-Purification of Rivers and Streams.

Citação norma Chicago

Cooper, Albert Edwin, Evelyn Ashley Cooper, and Joseph Alan Heward. On the Self-Purification of Rivers and Streams. 1919.

MLA citiranje

Cooper, Albert Edwin, Evelyn Ashley Cooper, and Joseph Alan Heward. On the Self-Purification of Rivers and Streams. 1919.