Gaya APA
SUMANTRI, S. (1982).
Study of Indonesia's economical active population (ed. 2).
Yogyakarta:
Gajah Mada University Press.
Gaya MLA
SUMANTRI, Suharsono.
"Study of Indonesia's economical active population".
ed. 2
Yogyakarta:
Gajah Mada University Press,
1982.
Buku.