Gaya APA

Joesworo, ., al, E. (1976). Preliminary report on health practices/contraceptive use survey . Surabaya: Puslitbang Yantekkes, Badan Litbangkes.

Gaya MLA

Joesworo, ., al, Et. "Preliminary report on health practices/contraceptive use survey". Surabaya: Puslitbang Yantekkes, Badan Litbangkes, 1976. print.