APA (7th ed.) Citation

Williams, D. B. (1968). Agricultural extension: Farm extension services in Australia, Britain and the United States of America. Melbourne University Press.

Chicago Style (17th ed.) Citation

Williams, Donald B. Agricultural Extension: Farm Extension Services in Australia, Britain and the United States of America. [Carlton, Vic.]: Melbourne University Press, 1968.

MLA (9th ed.) Citation

Williams, Donald B. Agricultural Extension: Farm Extension Services in Australia, Britain and the United States of America. Melbourne University Press, 1968.