Gaya APA
PANDJAITAN-Sjahrir, N, K.
(1990).
Workers in the Indonesian construction industry :
.
Ann Arbor:
U.M.I.
Gaya MLA
PANDJAITAN-Sjahrir, Nurmala, Kartini.
"Workers in the Indonesian construction industry :".
Ann Arbor:
U.M.I,
1990.
Buku.