Carr-Hill, R. A. (1988). The information base for the planning of the diversified educational field. International Institute for Educational Planning.
Chicago-viite (17. p.)Carr-Hill, R. A. The Information Base for the Planning of the Diversified Educational Field. Paris: International Institute for Educational Planning, 1988.
MLA-viite (9. p.)Carr-Hill, R. A. The Information Base for the Planning of the Diversified Educational Field. International Institute for Educational Planning, 1988.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.