Gaya APA
MATTHIAS,jr.a.j., .
(1960).
HOW TO DESIGN AND INSTALL PLUMBING
(
4th)
.
Chicago:
American Technical Society.
Gaya MLA
MATTHIAS,jr.a.j., .
"HOW TO DESIGN AND INSTALL PLUMBING".
4th
Chicago:
American Technical Society,
1960.
Textbook.