Παραπομπή APA

Zappe, R. W. (1991). Valve selection handbook (3rd ed.). Houston: Gulf Pub. Co.in association with Plant Engineering.

Παραπομπή Chicago Style

Zappe, R. W. Valve Selection Handbook. 3rd ed. Houston: Gulf Pub. Co.in association with Plant Engineering, 1991.

Παραπομπή MLA

Zappe, R. W. Valve Selection Handbook. 3rd ed. Houston: Gulf Pub. Co.in association with Plant Engineering, 1991.

Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.