Penggayaan APA
UNITED Nations Conference on Trade and Development, Geneva. (1989).
Unctad commodity yearbook 1989 .
New York:
United Nations.
Chicago Style
UNITED Nations Conference on Trade and Development, Geneva.
Unctad commodity yearbook 1989.
New York:
United Nations,
1989.
Buku.
MLA Style
UNITED Nations Conference on Trade and Development, Geneva.
Unctad commodity yearbook 1989.
New York:
United Nations,
1989.
Buku.
Turabian Style
UNITED Nations Conference on Trade and Development, Geneva.
Unctad commodity yearbook 1989.
New York:
United Nations,
1989.
Buku.