APA (7th ed.) Citation

Courtheoux, J. P. (1969). Classification of economic activities: An essay on the three-sector theory. International Federation for Housing and Planning.

Chicago Style (17th ed.) Citation

Courtheoux, Jean Paul. Classification of Economic Activities: An Essay on the Three-sector Theory. The Hague: International Federation for Housing and Planning, 1969.

MLA (9th ed.) Citation

Courtheoux, Jean Paul. Classification of Economic Activities: An Essay on the Three-sector Theory. International Federation for Housing and Planning, 1969.