Gaya APA
Grubel, Herbert G.. (1977).
International economics (text).
Homewood:
Richard D. Irwin.
Gaya Chicago
Grubel, Herbert G..
International economics.
text
Homewood:
Richard D. Irwin,
1977.
.
Gaya MLA
Grubel, Herbert G..
International economics.
text
Homewood:
Richard D. Irwin,
1977.
.
Gaya Turabian
Grubel, Herbert G..
International economics.
text
Homewood:
Richard D. Irwin,
1977.
.