Gaya APA
Merrick, R, C.
(1991).
Valve Selection and Specification Guide.
(
1991)
.
:
New York : Van Nostrand Reinhold,.
Gaya MLA
Merrick, Ronald, C..
"Valve Selection and Specification Guide.".
1991
:
New York : Van Nostrand Reinhold,,
1991.
Text.