United States. Department of Agriculture. Office of the Secretary, Robinson, T. R., & Swingle, W. T. (1924). Solar propagating frame for rooting citrus and other subtropical plants. [publisher not identified].
Chicago Style (17th ed.) CitationUnited States. Department of Agriculture. Office of the Secretary, T. Ralph Robinson, and Walter T. Swingle. Solar Propagating Frame for Rooting Citrus and Other Subtropical Plants. Washington: [publisher not identified], 1924.
MLA (9th ed.) CitationUnited States. Department of Agriculture. Office of the Secretary, et al. Solar Propagating Frame for Rooting Citrus and Other Subtropical Plants. [publisher not identified], 1924.
Warning: These citations may not always be 100% accurate.