APA Style
al, E., Valenzuela, A, V. (1983).
Illness prevalence survey 3 municipalites in the Philippines 1982-1983 .
Jakarta:
ASEAN.
MLA Style
al, Et., Valenzuela, Amanda, V..
"Illness prevalence survey 3 municipalites in the Philippines 1982-1983".
Jakarta:
ASEAN,
1983.
print.