Gaya APA
dkk, K, S. (1986).
Social factors affecting the use of childhood immunization in yogyakarta .
Yogyakarta:
Population Studies Center UGM.
Gaya MLA
dkk, Kim, Streatfield,.
"Social factors affecting the use of childhood immunization in yogyakarta".
Yogyakarta:
Population Studies Center UGM,
1986.
Text.