(1899). Yearbook of the United States Department of Agriculture 1898. Government Printing.
Cita Chicago (17th ed.)Yearbook of the United States Department of Agriculture 1898. Washington: Government Printing, 1899.
Cita MLA (9th ed.)Yearbook of the United States Department of Agriculture 1898. Government Printing, 1899.
Atenció: Aquestes cites poden no estar 100% correctes.