APA (7th ed.) Citation

Zappe, R. W. (1987). Valve selection handbook (2nd ed.). Gulf Pub. Co., Book Division.

Chicago Style (17th ed.) Citation

Zappe, R. W. Valve Selection Handbook. 2nd ed. Houston: Gulf Pub. Co., Book Division, 1987.

MLA (9th ed.) Citation

Zappe, R. W. Valve Selection Handbook. 2nd ed. Gulf Pub. Co., Book Division, 1987.

Warning: These citations may not always be 100% accurate.