Gaya APA
Swanson, C, P., Harrod, R. (1959).
**International economics .
Digswell Place:
Digswell Place: James Nisbet & Co; 1959.
Gaya MLA
Swanson, Carl, P.., Harrod, R.F.
"**International economics".
Digswell Place:
Digswell Place: James Nisbet & Co; 1959,
1959.
Text.