APA (7th ed.) Citation

Blackie & Maitland, P. S. (1990). Biology of fresh waters (2η έκδοση.). Blackie.

Chicago Style (17th ed.) Citation

Blackie and Peter S. Maitland. Biology of Fresh Waters. 2η έκδοση. Glasgow: Blackie, 1990.

MLA (8th ed.) Citation

Blackie and Peter S. Maitland. Biology of Fresh Waters. 2η έκδοση. Blackie, 1990.