Gaya APA
Gittinger, J. Price. (1982).
Economic analysis agricultural projects (2e).
Jakarta:
LPFE UI.
Gaya Chicago
Gittinger, J. Price.
Economic analysis agricultural projects.
2e
Jakarta:
LPFE UI,
1982.
Buku.
Gaya MLA
Gittinger, J. Price.
Economic analysis agricultural projects.
2e
Jakarta:
LPFE UI,
1982.
Buku.
Gaya Turabian
Gittinger, J. Price.
Economic analysis agricultural projects.
2e
Jakarta:
LPFE UI,
1982.
Buku.