Gaya APA
Walker, C, S.
(2013).
PRAKARSA COMPENDIUM JILID2
.
Jakarta:
Prakarsa infrastruktur indonesia.
Gaya MLA
Walker, Carol, S..
"PRAKARSA COMPENDIUM JILID2".
Jakarta:
Prakarsa infrastruktur indonesia,
2013.
Text Book Sipil.