APA (7th ed.) Citation

International Association of Hydrogeologists. Congress, Dillon, P. J., & Simmers, I. (1998). Shallow groundwater systems. A.A. Balkema.

Chicago Style (17th ed.) Citation

International Association of Hydrogeologists. Congress, P. J. Dillon, and I. Simmers. Shallow Groundwater Systems. Rotterdam ; Brookfield, VT: A.A. Balkema, 1998.

MLA (9th ed.) Citation

International Association of Hydrogeologists. Congress, et al. Shallow Groundwater Systems. A.A. Balkema, 1998.