United States. Department of Agriculture. Office of the Secretary & Morrison, B. Y. (1928). Yellow day lilies. [publisher not identified].
Chicago Style (17th ed.) CitationUnited States. Department of Agriculture. Office of the Secretary and B. Y. Morrison. Yellow Day Lilies. Washington: [publisher not identified], 1928.
MLA (9th ed.) CitationUnited States. Department of Agriculture. Office of the Secretary and B. Y. Morrison. Yellow Day Lilies. [publisher not identified], 1928.
Warning: These citations may not always be 100% accurate.