APA
Robin G. Brumfield, Paul V. Nelson Arthur J. Coutu Daniel H. Willits Robert S. Sowell, . (1981). Overhead costs of greenhouse firms differentiated by size of firm and market channel. North Carolina: North Carolina Agricultural Research Service.
Chicago
Robin G. Brumfield, Paul V. Nelson Arthur J. Coutu Daniel H. Willits Robert S. Sowell, . 1981. Overhead costs of greenhouse firms differentiated by size of firm and market channel. North Carolina: North Carolina Agricultural Research Service.
Harvard
Robin G. Brumfield, Paul V. Nelson Arthur J. Coutu Daniel H. Willits Robert S. Sowell, . (1981). Overhead costs of greenhouse firms differentiated by size of firm and market channel. North Carolina: North Carolina Agricultural Research Service.
MLA
Robin G. Brumfield, Paul V. Nelson Arthur J. Coutu Daniel H. Willits Robert S. Sowell, . Overhead costs of greenhouse firms differentiated by size of firm and market channel. North Carolina: North Carolina Agricultural Research Service. 1981.