Gaya APA
CAMERON, W., CROSS, F, L, . (1976).
Operation & maintenance of sewage treatment plants .
Westport:
CT : Technomic.
Gaya MLA
CAMERON, William.., CROSS, Frank, L., .
"Operation & maintenance of sewage treatment plants".
Westport:
CT : Technomic,
1976.
Buku.