Παραπομπή APA

Matthess, G., Foster, S. S. D., Skinner, A. C., Foster, S., & Skinner, A. C. (1985). Theoretical background, hydrogeology, and practice of groundwater protection zones. Hannover, West Germany: Heise.

Παραπομπή Chicago Style

Matthess, Georg, S. S. D. Foster, A. C. Skinner, S. Foster, and A. Ch Skinner. Theoretical Background, Hydrogeology, and Practice of Groundwater Protection Zones. Hannover, West Germany: Heise, 1985.

Παραπομπή MLA

Matthess, Georg, et al. Theoretical Background, Hydrogeology, and Practice of Groundwater Protection Zones. Hannover, West Germany: Heise, 1985.

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