Gaya APA
American society for testing and materials annual book of ASTM stansards:plastic pipe and building products. (1987).
:
ASTM.
Gaya Chicago
American society for testing and materials annual book of ASTM stansards:plastic pipe and building products.
.
:
ASTM,
1987.
.
Gaya MLA
American society for testing and materials annual book of ASTM stansards:plastic pipe and building products.
.
:
ASTM,
1987.
.
Gaya Turabian
American society for testing and materials annual book of ASTM stansards:plastic pipe and building products.
:
ASTM,
1987.
.