APA (7th ed.) Citation

Harrar, J. G. (1966). Principles for progress in world agriculture. [Rockefeller Foundation].

Chicago Style (17th ed.) Citation

Harrar, J. George. Principles for Progress in World Agriculture. [New York]: [Rockefeller Foundation], 1966.

MLA (9th ed.) Citation

Harrar, J. George. Principles for Progress in World Agriculture. [Rockefeller Foundation], 1966.