Gaya APA
El-Agraa, Ali M.. (1989).
International Trade .
New York:
St. Martins Press.
Gaya Chicago
El-Agraa, Ali M..
International Trade.
New York:
St. Martins Press,
1989.
Buku.
Gaya MLA
El-Agraa, Ali M..
International Trade.
New York:
St. Martins Press,
1989.
Buku.
Gaya Turabian
El-Agraa, Ali M..
International Trade.
New York:
St. Martins Press,
1989.
Buku.