Gaya APA
MAHONEY, W, J.
(1979).
Mining ven tures in developing countrees
(
Bag ke. 1)
.
Deventer:
Kluwer.
Gaya MLA
MAHONEY, William, J..
"Mining ven tures in developing countrees".
Bag ke. 1
Deventer:
Kluwer,
1979.
.