Gaya APA
Jacobs, G.D.. (1975).
Problems in developing countries .
:
s.n..
Gaya Chicago
Jacobs, G.D..
Problems in developing countries.
:
s.n.,
1975.
Computer Software.
Gaya MLA
Jacobs, G.D..
Problems in developing countries.
:
s.n.,
1975.
Computer Software.
Gaya Turabian
Jacobs, G.D..
Problems in developing countries.
:
s.n.,
1975.
Computer Software.