APA (7th ed.) Zitazioa

Betz Laboratories Inc. (1991). Betz handbook of industrial water conditioning (9a. ed.). Betz Laboratories Inc.

Chicago Style (17th ed.) Zitazioa

Betz Laboratories Inc. Betz Handbook of Industrial Water Conditioning. 9a. ed. s.l: Betz Laboratories Inc, 1991.

MLA (9th ed.) Zitazioa

Betz Laboratories Inc. Betz Handbook of Industrial Water Conditioning. 9a. ed. Betz Laboratories Inc, 1991.