APA Style
Handbook for information systems and services. (1977).
Paris:
UNESCO.
Chicago Style
Handbook for information systems and services.
.
Paris:
UNESCO,
1977.
.
MLA Style
Handbook for information systems and services.
.
Paris:
UNESCO,
1977.
.
Turabian Style
Handbook for information systems and services.
Paris:
UNESCO,
1977.
.