APA (7th ed.) Citation

Vries, C. A. d. (1968). Agricultural extension in the developing countries: A bibliography S544 .Z9 V. International Institute for Land Reclamation and Improvement.

Chicago Style (17th ed.) Citation

Vries, C. A. de. Agricultural Extension in the Developing Countries: A Bibliography S544 .Z9 V. Wageninen: International Institute for Land Reclamation and Improvement, 1968.

MLA (9th ed.) Citation

Vries, C. A. de. Agricultural Extension in the Developing Countries: A Bibliography S544 .Z9 V. International Institute for Land Reclamation and Improvement, 1968.