Clawson, M. (1968). Policy directions for US agriculture: Long-range choices in farming and rural living. Hopkins.
Chicago-Zitierstil (17. Ausg.)Clawson, Marion. Policy Directions for US Agriculture: Long-range Choices in Farming and Rural Living. Baltimore, Md: Hopkins, 1968.
MLA-Zitierstil (9. Ausg.)Clawson, Marion. Policy Directions for US Agriculture: Long-range Choices in Farming and Rural Living. Hopkins, 1968.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.