Gaya APA

WAHREN, U. (1997). Practical Introduction To Pumping Technology: a Basic guide to pumps - from specification to installation and operation (1). Houston: Gulf Publishing Company.

Gaya MLA

WAHREN, Uno. "Practical Introduction To Pumping Technology: a Basic guide to pumps - from specification to installation and operation". 1 Houston: Gulf Publishing Company, 1997. Printed.