Gaya APA
HARDJASOEMANTRI, K.
(1979).
The PTM project :
.
Yogyakarta:
Gadjah Mada University Press.
Gaya MLA
HARDJASOEMANTRI, Koesnadi.
"The PTM project : ".
Yogyakarta:
Gadjah Mada University Press,
1979.
Buku.