APA

National Ground Water Quality Symposium, National Water Well Association & USA. (19). Proceedings / 2nd NWWA-EPA National Ground Water Quality Symposium. Worthington, Ohio [u.a.]: Water Well Journal Publ. Co.

Chicago

National Ground Water Quality Symposium, National Water Well Association and USA. 19. Proceedings / 2nd NWWA-EPA National Ground Water Quality Symposium. Worthington, Ohio [u.a.]: Water Well Journal Publ. Co.

Harvard

National Ground Water Quality Symposium, National Water Well Association and USA. (19). Proceedings / 2nd NWWA-EPA National Ground Water Quality Symposium. Worthington, Ohio [u.a.]: Water Well Journal Publ. Co.

MLA

National Ground Water Quality Symposium, National Water Well Association and USA. Proceedings / 2nd NWWA-EPA National Ground Water Quality Symposium. Worthington, Ohio [u.a.]: Water Well Journal Publ. Co. 19.